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Commit 661299d9 authored by Russell King's avatar Russell King Committed by Russell King
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Merge with Linus' 2.6 tree

parents 05caac58 41c018b7
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CREDITS
View file @ 661299d9
......@@ -1624,10 +1624,10 @@ E: ajoshi@shell.unixbox.com
D: fbdev hacking
N: Jesper Juhl
E: juhl-lkml@dif.dk
D: Various small janitor fixes, cleanups etc.
E: jesper.juhl@gmail.com
D: Various fixes, cleanups and minor features.
S: Lemnosvej 1, 3.tv
S: 2300 Copenhagen S
S: 2300 Copenhagen S.
S: Denmark
N: Jozsef Kadlecsik
......
Documentation/Changes
View file @ 661299d9
......@@ -65,6 +65,7 @@ o isdn4k-utils 3.1pre1 # isdnctrl 2>&1|grep version
o nfs-utils 1.0.5 # showmount --version
o procps 3.2.0 # ps --version
o oprofile 0.9 # oprofiled --version
o udev 058 # udevinfo -V
Kernel compilation
==================
......
Documentation/infiniband/core_locking.txt 0 → 100644
View file @ 661299d9
INFINIBAND MIDLAYER LOCKING
This guide is an attempt to make explicit the locking assumptions
made by the InfiniBand midlayer. It describes the requirements on
both low-level drivers that sit below the midlayer and upper level
protocols that use the midlayer.
Sleeping and interrupt context
With the following exceptions, a low-level driver implementation of
all of the methods in struct ib_device may sleep. The exceptions
are any methods from the list:
create_ah
modify_ah
query_ah
destroy_ah
bind_mw
post_send
post_recv
poll_cq
req_notify_cq
map_phys_fmr
which may not sleep and must be callable from any context.
The corresponding functions exported to upper level protocol
consumers:
ib_create_ah
ib_modify_ah
ib_query_ah
ib_destroy_ah
ib_bind_mw
ib_post_send
ib_post_recv
ib_req_notify_cq
ib_map_phys_fmr
are therefore safe to call from any context.
In addition, the function
ib_dispatch_event
used by low-level drivers to dispatch asynchronous events through
the midlayer is also safe to call from any context.
Reentrancy
All of the methods in struct ib_device exported by a low-level
driver must be fully reentrant. The low-level driver is required to
perform all synchronization necessary to maintain consistency, even
if multiple function calls using the same object are run
simultaneously.
The IB midlayer does not perform any serialization of function calls.
Because low-level drivers are reentrant, upper level protocol
consumers are not required to perform any serialization. However,
some serialization may be required to get sensible results. For
example, a consumer may safely call ib_poll_cq() on multiple CPUs
simultaneously. However, the ordering of the work completion
information between different calls of ib_poll_cq() is not defined.
Callbacks
A low-level driver must not perform a callback directly from the
same callchain as an ib_device method call. For example, it is not
allowed for a low-level driver to call a consumer's completion event
handler directly from its post_send method. Instead, the low-level
driver should defer this callback by, for example, scheduling a
tasklet to perform the callback.
The low-level driver is responsible for ensuring that multiple
completion event handlers for the same CQ are not called
simultaneously. The driver must guarantee that only one CQ event
handler for a given CQ is running at a time. In other words, the
following situation is not allowed:
CPU1 CPU2
low-level driver ->
consumer CQ event callback:
/* ... */
ib_req_notify_cq(cq, ...);
low-level driver ->
/* ... */ consumer CQ event callback:
/* ... */
return from CQ event handler
The context in which completion event and asynchronous event
callbacks run is not defined. Depending on the low-level driver, it
may be process context, softirq context, or interrupt context.
Upper level protocol consumers may not sleep in a callback.
Hot-plug
A low-level driver announces that a device is ready for use by
consumers when it calls ib_register_device(), all initialization
must be complete before this call. The device must remain usable
until the driver's call to ib_unregister_device() has returned.
A low-level driver must call ib_register_device() and
ib_unregister_device() from process context. It must not hold any
semaphores that could cause deadlock if a consumer calls back into
the driver across these calls.
An upper level protocol consumer may begin using an IB device as
soon as the add method of its struct ib_client is called for that
device. A consumer must finish all cleanup and free all resources
relating to a device before returning from the remove method.
A consumer is permitted to sleep in its add and remove methods.
Documentation/infiniband/user_mad.txt
View file @ 661299d9
......@@ -28,13 +28,37 @@ Creating MAD agents
Receiving MADs
MADs are received using read(). The buffer passed to read() must be
large enough to hold at least one struct ib_user_mad. For example:
struct ib_user_mad mad;
ret = read(fd, &mad, sizeof mad);
if (ret != sizeof mad)
MADs are received using read(). The receive side now supports
RMPP. The buffer passed to read() must be at least one
struct ib_user_mad + 256 bytes. For example:
If the buffer passed is not large enough to hold the received
MAD (RMPP), the errno is set to ENOSPC and the length of the
buffer needed is set in mad.length.
Example for normal MAD (non RMPP) reads:
struct ib_user_mad *mad;
mad = malloc(sizeof *mad + 256);
ret = read(fd, mad, sizeof *mad + 256);
if (ret != sizeof mad + 256) {
perror("read");
free(mad);
}
Example for RMPP reads:
struct ib_user_mad *mad;
mad = malloc(sizeof *mad + 256);
ret = read(fd, mad, sizeof *mad + 256);
if (ret == -ENOSPC)) {
length = mad.length;
free(mad);
mad = malloc(sizeof *mad + length);
ret = read(fd, mad, sizeof *mad + length);
}
if (ret < 0) {
perror("read");
free(mad);
}
In addition to the actual MAD contents, the other struct ib_user_mad
fields will be filled in with information on the received MAD. For
......@@ -50,18 +74,21 @@ Sending MADs
MADs are sent using write(). The agent ID for sending should be
filled into the id field of the MAD, the destination LID should be
filled into the lid field, and so on. For example:
filled into the lid field, and so on. The send side does support
RMPP so arbitrary length MAD can be sent. For example:
struct ib_user_mad *mad;
struct ib_user_mad mad;
mad = malloc(sizeof *mad + mad_length);
/* fill in mad.data */
/* fill in mad->data */
mad.id = my_agent; /* req.id from agent registration */
mad.lid = my_dest; /* in network byte order... */
mad->hdr.id = my_agent; /* req.id from agent registration */
mad->hdr.lid = my_dest; /* in network byte order... */
/* etc. */
ret = write(fd, &mad, sizeof mad);
if (ret != sizeof mad)
ret = write(fd, &mad, sizeof *mad + mad_length);
if (ret != sizeof *mad + mad_length)
perror("write");
Setting IsSM Capability Bit
......
README
View file @ 661299d9
......@@ -87,6 +87,16 @@ INSTALLING the kernel:
kernel source. Patches are applied from the current directory, but
an alternative directory can be specified as the second argument.
- If you are upgrading between releases using the stable series patches
(for example, patch-2.6.xx.y), note that these "dot-releases" are
not incremental and must be applied to the 2.6.xx base tree. For
example, if your base kernel is 2.6.12 and you want to apply the
2.6.12.3 patch, you do not and indeed must not first apply the
2.6.12.1 and 2.6.12.2 patches. Similarly, if you are running kernel
version 2.6.12.2 and want to jump to 2.6.12.3, you must first
reverse the 2.6.12.2 patch (that is, patch -R) _before_ applying
the 2.6.12.3 patch.
- Make sure you have no stale .o files and dependencies lying around:
cd linux
......
arch/alpha/kernel/systbls.S
View file @ 661299d9
......@@ -461,6 +461,11 @@ sys_call_table:
.quad sys_add_key
.quad sys_request_key /* 440 */
.quad sys_keyctl
.quad sys_ioprio_set
.quad sys_ioprio_get
.quad sys_inotify_init
.quad sys_inotify_add_watch /* 445 */
.quad sys_inotify_rm_watch
.size sys_call_table, . - sys_call_table
.type sys_call_table, @object
......
arch/arm/lib/bitops.h
View file @ 661299d9
......@@ -19,9 +19,9 @@
mov r3, r2, lsl r3 @ create mask
1: ldrexb r2, [r1]
ands r0, r2, r3 @ save old value of bit
\instr ip, r2, r3 @ toggle bit
strexb r2, ip, [r1]
cmp r2, #0
\instr r2, r2, r3 @ toggle bit
strexb ip, r2, [r1]
cmp ip, #0
bne 1b
cmp r0, #0
movne r0, #1
......
arch/cris/Kconfig.debug
View file @ 661299d9
......@@ -38,4 +38,9 @@ config FRAME_POINTER
If you don't debug the kernel, you can say N, but we may not be able
to solve problems without frame pointers.
config DEBUG_NMI_OOPS
bool "NMI causes oops printout"
help
If the system locks up without any debug information you can say Y
here to make it possible to dump an OOPS with an external NMI.
endmenu
arch/cris/Makefile
View file @ 661299d9
# $Id: Makefile,v 1.23 2004/10/19 13:07:34 starvik Exp $
# $Id: Makefile,v 1.28 2005/03/17 10:44:37 larsv Exp $
# cris/Makefile
#
# This file is included by the global makefile so that you can add your own
......@@ -15,6 +15,7 @@
arch-y := v10
arch-$(CONFIG_ETRAX_ARCH_V10) := v10
arch-$(CONFIG_ETRAX_ARCH_V32) := v32
# No config avaiable for make clean etc
ifneq ($(arch-y),)
......@@ -46,6 +47,21 @@ core-y += arch/$(ARCH)/$(SARCH)/kernel/ arch/$(ARCH)/$(SARCH)/mm/
drivers-y += arch/$(ARCH)/$(SARCH)/drivers/
libs-y += arch/$(ARCH)/$(SARCH)/lib/ $(LIBGCC)
# cris source path
SRC_ARCH = $(srctree)/arch/$(ARCH)
# cris object files path
OBJ_ARCH = $(objtree)/arch/$(ARCH)
target_boot_arch_dir = $(OBJ_ARCH)/$(SARCH)/boot
target_boot_dir = $(OBJ_ARCH)/boot
src_boot_dir = $(SRC_ARCH)/boot
target_compressed_dir = $(OBJ_ARCH)/boot/compressed
src_compressed_dir = $(SRC_ARCH)/boot/compressed
target_rescue_dir = $(OBJ_ARCH)/boot/rescue
src_rescue_dir = $(SRC_ARCH)/boot/rescue
export target_boot_arch_dir target_boot_dir src_boot_dir target_compressed_dir src_compressed_dir target_rescue_dir src_rescue_dir
vmlinux.bin: vmlinux
$(OBJCOPY) $(OBJCOPYFLAGS) vmlinux vmlinux.bin
......@@ -65,44 +81,52 @@ cramfs:
clinux: vmlinux.bin decompress.bin rescue.bin
decompress.bin: FORCE
@make -C arch/$(ARCH)/boot/compressed decompress.bin
decompress.bin: $(target_boot_dir)
@$(MAKE) -f $(src_compressed_dir)/Makefile $(target_compressed_dir)/decompress.bin
rescue.bin: FORCE
@make -C arch/$(ARCH)/boot/rescue rescue.bin
$(target_rescue_dir)/rescue.bin: $(target_boot_dir)
@$(MAKE) -f $(src_rescue_dir)/Makefile $(target_rescue_dir)/rescue.bin
zImage: vmlinux.bin rescue.bin
zImage: $(target_boot_dir) vmlinux.bin $(target_rescue_dir)/rescue.bin
## zImage - Compressed kernel (gzip)
@make -C arch/$(ARCH)/boot/ zImage
@$(MAKE) -f $(src_boot_dir)/Makefile zImage
$(target_boot_dir): $(target_boot_arch_dir)
ln -sfn $< $@
$(target_boot_arch_dir):
mkdir -p $@
compressed: zImage
archmrproper:
archclean:
$(Q)$(MAKE) $(clean)=arch/$(ARCH)/boot
@if [ -d arch/$(ARCH)/boot ]; then \
$(MAKE) $(clean)=arch/$(ARCH)/boot ; \
fi
rm -f timage vmlinux.bin decompress.bin rescue.bin cramfs.img
rm -rf $(LD_SCRIPT).tmp
prepare: arch/$(ARCH)/.links include/asm-$(ARCH)/.arch \
prepare: $(SRC_ARCH)/.links $(srctree)/include/asm-$(ARCH)/.arch \
include/asm-$(ARCH)/$(SARCH)/offset.h
# Create some links to make all tools happy
arch/$(ARCH)/.links:
@rm -rf arch/$(ARCH)/drivers
@ln -sfn $(SARCH)/drivers arch/$(ARCH)/drivers
@rm -rf arch/$(ARCH)/boot
@ln -sfn $(SARCH)/boot arch/$(ARCH)/boot
@rm -rf arch/$(ARCH)/lib
@ln -sfn $(SARCH)/lib arch/$(ARCH)/lib
@ln -sfn $(SARCH) arch/$(ARCH)/arch
@ln -sfn ../$(SARCH)/vmlinux.lds.S arch/$(ARCH)/kernel/vmlinux.lds.S
$(SRC_ARCH)/.links:
@rm -rf $(SRC_ARCH)/drivers
@ln -sfn $(SRC_ARCH)/$(SARCH)/drivers $(SRC_ARCH)/drivers
@rm -rf $(SRC_ARCH)/boot
@ln -sfn $(SRC_ARCH)/$(SARCH)/boot $(SRC_ARCH)/boot
@rm -rf $(SRC_ARCH)/lib
@ln -sfn $(SRC_ARCH)/$(SARCH)/lib $(SRC_ARCH)/lib
@ln -sfn $(SRC_ARCH)/$(SARCH) $(SRC_ARCH)/arch
@ln -sfn $(SRC_ARCH)/$(SARCH)/vmlinux.lds.S $(SRC_ARCH)/kernel/vmlinux.lds.S
@touch $@
# Create link to sub arch includes
include/asm-$(ARCH)/.arch: $(wildcard include/config/arch/*.h)
@echo ' Making asm-$(ARCH)/arch -> asm-$(ARCH)/$(SARCH) symlink'
$(srctree)/include/asm-$(ARCH)/.arch: $(wildcard include/config/arch/*.h)
@echo ' Making $(srctree)/include/asm-$(ARCH)/arch -> $(srctree)/include/asm-$(ARCH)/$(SARCH) symlink'
@rm -f include/asm-$(ARCH)/arch
@ln -sf $(SARCH) include/asm-$(ARCH)/arch
@ln -sf $(srctree)/include/asm-$(ARCH)/$(SARCH) $(srctree)/include/asm-$(ARCH)/arch
@touch $@
arch/$(ARCH)/$(SARCH)/kernel/asm-offsets.s: include/asm include/linux/version.h \
......
arch/cris/arch-v10/Kconfig
View file @ 661299d9
......@@ -259,6 +259,37 @@ config ETRAX_DEBUG_PORT_NULL
endchoice
choice
prompt "Kernel GDB port"
depends on ETRAX_KGDB
default ETRAX_KGDB_PORT0
help
Choose a serial port for kernel debugging. NOTE: This port should
not be enabled under Drivers for built-in interfaces (as it has its
own initialization code) and should not be the same as the debug port.
config ETRAX_KGDB_PORT0
bool "Serial-0"
help
Use serial port 0 for kernel debugging.
config ETRAX_KGDB_PORT1
bool "Serial-1"
help
Use serial port 1 for kernel debugging.
config ETRAX_KGDB_PORT2
bool "Serial-2"
help
Use serial port 2 for kernel debugging.
config ETRAX_KGDB_PORT3
bool "Serial-3"
help
Use serial port 3 for kernel debugging.
endchoice
choice
prompt "Product rescue-port"
depends on ETRAX_ARCH_V10
......
arch/cris/arch-v10/boot/Makefile
View file @ 661299d9
#
# arch/cris/boot/Makefile
#
target = $(target_boot_dir)
src = $(src_boot_dir)
zImage: compressed/vmlinuz
compressed/vmlinuz: $(TOPDIR)/vmlinux
@$(MAKE) -C compressed vmlinuz
compressed/vmlinuz:
@$(MAKE) -f $(src)/compressed/Makefile $(target_compressed_dir)/vmlinuz
clean:
rm -f zImage tools/build compressed/vmlinux.out
@$(MAKE) -C compressed clean
@$(MAKE) -f $(src)/compressed/Makefile clean
arch/cris/arch-v10/boot/compressed/Makefile
View file @ 661299d9
#
# linux/arch/etrax100/boot/compressed/Makefile
#
# create a compressed vmlinux image from the original vmlinux files and romfs
# create a compressed vmlinuz image from the binary vmlinux.bin file
#
target = $(target_compressed_dir)
src = $(src_compressed_dir)
CC = gcc-cris -melf -I $(TOPDIR)/include
CC = gcc-cris -melf $(LINUXINCLUDE)
CFLAGS = -O2
LD = ld-cris
OBJCOPY = objcopy-cris
OBJCOPYFLAGS = -O binary --remove-section=.bss
OBJECTS = head.o misc.o
OBJECTS = $(target)/head.o $(target)/misc.o
# files to compress
SYSTEM = $(TOPDIR)/vmlinux.bin
SYSTEM = $(objtree)/vmlinux.bin
all: vmlinuz
all: $(target_compressed_dir)/vmlinuz
decompress.bin: $(OBJECTS)
$(LD) -T decompress.ld -o decompress.o $(OBJECTS)
$(OBJCOPY) $(OBJCOPYFLAGS) decompress.o decompress.bin
# save it for mkprod in the topdir.
cp decompress.bin $(TOPDIR)
$(target)/decompress.bin: $(OBJECTS)
$(LD) -T $(src)/decompress.ld -o $(target)/decompress.o $(OBJECTS)
$(OBJCOPY) $(OBJCOPYFLAGS) $(target)/decompress.o $(target)/decompress.bin
# Create vmlinuz image in top-level build directory
$(target_compressed_dir)/vmlinuz: $(target) piggy.img $(target)/decompress.bin
@echo " COMPR vmlinux.bin --> vmlinuz"
@cat $(target)/decompress.bin piggy.img > $(target_compressed_dir)/vmlinuz
@rm -f piggy.img
vmlinuz: piggy.img decompress.bin
cat decompress.bin piggy.img > vmlinuz
rm -f piggy.img
$(target)/head.o: $(src)/head.S
$(CC) -D__ASSEMBLY__ -traditional -c $< -o $@
head.o: head.S
$(CC) -D__ASSEMBLY__ -traditional -c head.S -o head.o
$(target)/misc.o: $(src)/misc.c
$(CC) -D__KERNEL__ -c $< -o $@
# gzip the kernel image
piggy.img: $(SYSTEM)
cat $(SYSTEM) | gzip -f -9 > piggy.img
@cat $(SYSTEM) | gzip -f -9 > piggy.img
$(target):
mkdir -p $(target)
clean:
rm -f piggy.img vmlinuz vmlinuz.o
rm -f piggy.img $(objtree)/vmlinuz
arch/cris/arch-v10/boot/compressed/head.S
View file @ 661299d9
......@@ -13,7 +13,8 @@
#include <asm/arch/sv_addr_ag.h>
#define RAM_INIT_MAGIC 0x56902387
#define COMMAND_LINE_MAGIC 0x87109563
;; Exported symbols
.globl _input_data
......@@ -88,6 +89,12 @@ basse: move.d pc, r5
cmp.d r2, r1
bcs 1b
nop
;; Save command line magic and address.
move.d _cmd_line_magic, $r12
move.d $r10, [$r12]
move.d _cmd_line_addr, $r12
move.d $r11, [$r12]
;; Do the decompression and save compressed size in _inptr
......@@ -98,7 +105,13 @@ basse: move.d pc, r5
move.d [_input_data], r9 ; flash address of compressed kernel
add.d [_inptr], r9 ; size of compressed kernel
;; Restore command line magic and address.
move.d _cmd_line_magic, $r10
move.d [$r10], $r10
move.d _cmd_line_addr, $r11
move.d [$r11], $r11
;; Enter the decompressed kernel
move.d RAM_INIT_MAGIC, r8 ; Tell kernel that DRAM is initialized
jump 0x40004000 ; kernel is linked to this address
......@@ -107,5 +120,8 @@ basse: move.d pc, r5
_input_data:
.dword 0 ; used by the decompressor
_cmd_line_magic:
.dword 0
_cmd_line_addr:
.dword 0
#include "../../lib/hw_settings.S"
arch/cris/arch-v10/boot/rescue/Makefile
View file @ 661299d9
#
# Makefile for rescue code
#
ifndef TOPDIR
TOPDIR = ../../../..
endif
CC = gcc-cris -mlinux -I $(TOPDIR)/include
target = $(target_rescue_dir)
src = $(src_rescue_dir)
CC = gcc-cris -mlinux $(LINUXINCLUDE)
CFLAGS = -O2
LD = gcc-cris -mlinux -nostdlib
OBJCOPY = objcopy-cris
OBJCOPYFLAGS = -O binary --remove-section=.bss
all: rescue.bin testrescue.bin kimagerescue.bin
rescue: rescue.bin
# do nothing
all: $(target)/rescue.bin $(target)/testrescue.bin $(target)/kimagerescue.bin
rescue.bin: head.o
$(LD) -T rescue.ld -o rescue.o head.o
$(OBJCOPY) $(OBJCOPYFLAGS) rescue.o rescue.bin
cp rescue.bin $(TOPDIR)
$(target)/rescue.bin: $(target) $(target)/head.o
$(LD) -T $(src)/rescue.ld -o $(target)/rescue.o $(target)/head.o
$(OBJCOPY) $(OBJCOPYFLAGS) $(target)/rescue.o $(target)/rescue.bin
# Place a copy in top-level build directory
cp -p $(target)/rescue.bin $(objtree)
testrescue.bin: testrescue.o
$(OBJCOPY) $(OBJCOPYFLAGS) testrescue.o tr.bin
$(target)/testrescue.bin: $(target) $(target)/testrescue.o
$(OBJCOPY) $(OBJCOPYFLAGS) $(target)/testrescue.o tr.bin
# Pad it to 784 bytes
dd if=/dev/zero of=tmp2423 bs=1 count=784
cat tr.bin tmp2423 >testrescue_tmp.bin
dd if=testrescue_tmp.bin of=testrescue.bin bs=1 count=784
dd if=testrescue_tmp.bin of=$(target)/testrescue.bin bs=1 count=784
rm tr.bin tmp2423 testrescue_tmp.bin
kimagerescue.bin: kimagerescue.o
$(OBJCOPY) $(OBJCOPYFLAGS) kimagerescue.o ktr.bin
$(target)/kimagerescue.bin: $(target) $(target)/kimagerescue.o
$(OBJCOPY) $(OBJCOPYFLAGS) $(target)/kimagerescue.o ktr.bin
# Pad it to 784 bytes, that's what the rescue loader expects
dd if=/dev/zero of=tmp2423 bs=1 count=784
cat ktr.bin tmp2423 >kimagerescue_tmp.bin
dd if=kimagerescue_tmp.bin of=kimagerescue.bin bs=1 count=784
dd if=kimagerescue_tmp.bin of=$(target)/kimagerescue.bin bs=1 count=784
rm ktr.bin tmp2423 kimagerescue_tmp.bin
head.o: head.S
$(target):
mkdir -p $(target)
$(target)/head.o: $(src)/head.S
$(CC) -D__ASSEMBLY__ -traditional -c $< -o $*.o
testrescue.o: testrescue.S
$(target)/testrescue.o: $(src)/testrescue.S
$(CC) -D__ASSEMBLY__ -traditional -c $< -o $*.o
kimagerescue.o: kimagerescue.S
$(target)/kimagerescue.o: $(src)/kimagerescue.S
$(CC) -D__ASSEMBLY__ -traditional -c $< -o $*.o
clean:
rm -f *.o *.bin
rm -f $(target)/*.o $(target)/*.bin
fastdep:
......
arch/cris/arch-v10/boot/rescue/head.S
View file @ 661299d9
/* $Id: head.S,v 1.6 2003/04/09 08:12:43 pkj Exp $
/* $Id: head.S,v 1.7 2005/03/07 12:11:06 starvik Exp $
*
* Rescue code, made to reside at the beginning of the
* flash-memory. when it starts, it checks a partition
......@@ -121,12 +121,13 @@
;; 0x80000000 if loaded in flash (as it should be)
;; since etrax actually starts at address 2 when booting from flash, we
;; put a nop (2 bytes) here first so we dont accidentally skip the di
nop
di
jump in_cache ; enter cached area instead
in_cache:
in_cache:
;; first put a jump test to give a possibility of upgrading the rescue code
;; without erasing/reflashing the sector. we put a longword of -1 here and if
......@@ -325,9 +326,29 @@ flash_ok:
;; result will be in r0
checksum:
moveq 0, $r0
1: addu.b [$r1+], $r0
subq 1, $r2
bne 1b
moveq CONFIG_ETRAX_FLASH1_SIZE, $r6
;; If the first physical flash memory is exceeded wrap to the second one.
btstq 26, $r1 ; Are we addressing first flash?
bpl 1f
nop
clear.d $r6
1: test.d $r6 ; 0 = no wrapping
beq 2f
nop
lslq 20, $r6 ; Convert MB to bytes
sub.d $r1, $r6
2: addu.b [$r1+], $r0
subq 1, $r6 ; Flash memory left
beq 3f
subq 1, $r2 ; Length left
bne 2b
nop
ret
nop
3: move.d MEM_CSE1_START, $r1 ; wrap to second flash
ba 2b
nop
arch/cris/arch-v10/drivers/Kconfig
View file @ 661299d9
This diff is collapsed.
arch/cris/arch-v10/drivers/axisflashmap.c
View file @ 661299d9
......@@ -11,6 +11,9 @@
* partition split defined below.
*
* $Log: axisflashmap.c,v $
* Revision 1.11 2004/11/15 10:27:14 starvik
* Corrected typo (Thanks to Milton Miller <miltonm@bga.com>).
*
* Revision 1.10 2004/08/16 12:37:22 starvik
* Merge of Linux 2.6.8
*
......@@ -161,7 +164,7 @@
#elif CONFIG_ETRAX_FLASH_BUSWIDTH==2
#define flash_data __u16
#elif CONFIG_ETRAX_FLASH_BUSWIDTH==4
#define flash_data __u16
#define flash_data __u32
#endif
/* From head.S */
......
arch/cris/arch-v10/drivers/ds1302.c
View file @ 661299d9
......@@ -7,6 +7,15 @@
*! Functions exported: ds1302_readreg, ds1302_writereg, ds1302_init
*!
*! $Log: ds1302.c,v $
*! Revision 1.18 2005/01/24 09:11:26 mikaelam
*! Minor changes to get DS1302 RTC chip driver to work
*!
*! Revision 1.17 2005/01/05 06:11:22 starvik
*! No need to do local_irq_disable after local_irq_save.
*!
*! Revision 1.16 2004/12/13 12:21:52 starvik
*! Added I/O and DMA allocators from Linux 2.4
*!
*! Revision 1.14 2004/08/24 06:48:43 starvik
*! Whitespace cleanup
*!
......@@ -124,9 +133,9 @@
*!
*! ---------------------------------------------------------------------------
*!
*! (C) Copyright 1999, 2000, 2001 Axis Communications AB, LUND, SWEDEN
*! (C) Copyright 1999, 2000, 2001, 2002, 2003, 2004 Axis Communications AB, LUND, SWEDEN
*!
*! $Id: ds1302.c,v 1.14 2004/08/24 06:48:43 starvik Exp $
*! $Id: ds1302.c,v 1.18 2005/01/24 09:11:26 mikaelam Exp $
*!
*!***************************************************************************/
......@@ -145,6 +154,7 @@
#include <asm/arch/svinto.h>
#include <asm/io.h>
#include <asm/rtc.h>
#include <asm/arch/io_interface_mux.h>
#define RTC_MAJOR_NR 121 /* local major, change later */
......@@ -320,7 +330,6 @@ get_rtc_time(struct rtc_time *rtc_tm)
unsigned long flags;
local_irq_save(flags);
local_irq_disable();
rtc_tm->tm_sec = CMOS_READ(RTC_SECONDS);
rtc_tm->tm_min = CMOS_READ(RTC_MINUTES);
......@@ -358,7 +367,7 @@ static int
rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
unsigned long arg)
{
unsigned long flags;
unsigned long flags;
switch(cmd) {
case RTC_RD_TIME: /* read the time/date from RTC */
......@@ -382,7 +391,7 @@ rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
return -EPERM;
if (copy_from_user(&rtc_tm, (struct rtc_time*)arg, sizeof(struct rtc_time)))
return -EFAULT;
return -EFAULT;
yrs = rtc_tm.tm_year + 1900;
mon = rtc_tm.tm_mon + 1; /* tm_mon starts at zero */
......@@ -419,7 +428,6 @@ rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
BIN_TO_BCD(yrs);
local_irq_save(flags);
local_irq_disable();
CMOS_WRITE(yrs, RTC_YEAR);
CMOS_WRITE(mon, RTC_MONTH);
CMOS_WRITE(day, RTC_DAY_OF_MONTH);
......@@ -438,7 +446,7 @@ rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
case RTC_SET_CHARGE: /* set the RTC TRICKLE CHARGE register */
{
int tcs_val;
int tcs_val;
if (!capable(CAP_SYS_TIME))
return -EPERM;
......@@ -492,8 +500,8 @@ print_rtc_status(void)
/* The various file operations we support. */
static struct file_operations rtc_fops = {
.owner = THIS_MODULE,
.ioctl = rtc_ioctl,
.owner = THIS_MODULE,
.ioctl = rtc_ioctl,
};
/* Probe for the chip by writing something to its RAM and try reading it back. */
......@@ -532,7 +540,7 @@ ds1302_probe(void)
"PB",
#endif
CONFIG_ETRAX_DS1302_RSTBIT);
print_rtc_status();
print_rtc_status();
retval = 1;
} else {
stop();
......@@ -548,7 +556,9 @@ ds1302_probe(void)
int __init
ds1302_init(void)
{
#ifdef CONFIG_ETRAX_I2C
i2c_init();
#endif
if (!ds1302_probe()) {
#ifdef CONFIG_ETRAX_DS1302_RST_ON_GENERIC_PORT
......@@ -558,25 +568,42 @@ ds1302_init(void)
*
* Make sure that R_GEN_CONFIG is setup correct.
*/
genconfig_shadow = ((genconfig_shadow &
~IO_MASK(R_GEN_CONFIG, ata)) |
(IO_STATE(R_GEN_CONFIG, ata, select)));
*R_GEN_CONFIG = genconfig_shadow;
/* Allocating the ATA interface will grab almost all
* pins in I/O groups a, b, c and d. A consequence of
* allocating the ATA interface is that the fixed
* interfaces shared RAM, parallel port 0, parallel
* port 1, parallel port W, SCSI-8 port 0, SCSI-8 port
* 1, SCSI-W, serial port 2, serial port 3,
* synchronous serial port 3 and USB port 2 and almost
* all GPIO pins on port g cannot be used.
*/
if (cris_request_io_interface(if_ata, "ds1302/ATA")) {
printk(KERN_WARNING "ds1302: Failed to get IO interface\n");
return -1;
}
#elif CONFIG_ETRAX_DS1302_RSTBIT == 0
/* Set the direction of this bit to out. */
genconfig_shadow = ((genconfig_shadow &
~IO_MASK(R_GEN_CONFIG, g0dir)) |
(IO_STATE(R_GEN_CONFIG, g0dir, out)));
*R_GEN_CONFIG = genconfig_shadow;
if (cris_io_interface_allocate_pins(if_gpio_grp_a,
'g',
CONFIG_ETRAX_DS1302_RSTBIT,
CONFIG_ETRAX_DS1302_RSTBIT)) {
printk(KERN_WARNING "ds1302: Failed to get IO interface\n");
return -1;
}
/* Set the direction of this bit to out. */
genconfig_shadow = ((genconfig_shadow &
~IO_MASK(R_GEN_CONFIG, g0dir)) |
(IO_STATE(R_GEN_CONFIG, g0dir, out)));
*R_GEN_CONFIG = genconfig_shadow;
#endif
if (!ds1302_probe()) {
printk(KERN_WARNING "%s: RTC not found.\n", ds1302_name);
return -1;
return -1;
}
#else
printk(KERN_WARNING "%s: RTC not found.\n", ds1302_name);
return -1;
return -1;
#endif
}
/* Initialise trickle charger */
......
arch/cris/arch-v10/drivers/eeprom.c
View file @ 661299d9
......@@ -20,6 +20,12 @@
*! in the spin-lock.
*!
*! $Log: eeprom.c,v $
*! Revision 1.12 2005/06/19 17:06:46 starvik
*! Merge of Linux 2.6.12.
*!
*! Revision 1.11 2005/01/26 07:14:46 starvik
*! Applied diff from kernel janitors (Nish Aravamudan).
*!
*! Revision 1.10 2003/09/11 07:29:48 starvik
*! Merge of Linux 2.6.0-test5
*!
......@@ -94,6 +100,7 @@
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
#include <asm/uaccess.h>
#include "i2c.h"
......@@ -526,15 +533,10 @@ static ssize_t eeprom_read(struct file * file, char * buf, size_t count, loff_t
return -EFAULT;
}
while(eeprom.busy)
{
interruptible_sleep_on(&eeprom.wait_q);
wait_event_interruptible(eeprom.wait_q, !eeprom.busy);
if (signal_pending(current))
return -EINTR;
/* bail out if we get interrupted */
if (signal_pending(current))
return -EINTR;
}
eeprom.busy++;
page = (unsigned char) (p >> 8);
......@@ -604,13 +606,10 @@ static ssize_t eeprom_write(struct file * file, const char * buf, size_t count,
return -EFAULT;
}
while(eeprom.busy)
{
interruptible_sleep_on(&eeprom.wait_q);
/* bail out if we get interrupted */
if (signal_pending(current))
return -EINTR;
}
wait_event_interruptible(eeprom.wait_q, !eeprom.busy);
/* bail out if we get interrupted */
if (signal_pending(current))
return -EINTR;
eeprom.busy++;
for(i = 0; (i < EEPROM_RETRIES) && (restart > 0); i++)
{
......
arch/cris/arch-v10/drivers/gpio.c
View file @ 661299d9
This diff is collapsed.
arch/cris/arch-v10/drivers/i2c.c
View file @ 661299d9
......@@ -12,6 +12,15 @@
*! don't use PB_I2C if DS1302 uses same bits,
*! use PB.
*! $Log: i2c.c,v $
*! Revision 1.13 2005/03/07 13:13:07 starvik
*! Added spinlocks to protect states etc
*!
*! Revision 1.12 2005/01/05 06:11:22 starvik
*! No need to do local_irq_disable after local_irq_save.
*!
*! Revision 1.11 2004/12/13 12:21:52 starvik
*! Added I/O and DMA allocators from Linux 2.4
*!
*! Revision 1.9 2004/08/24 06:49:14 starvik
*! Whitespace cleanup
*!
......@@ -75,7 +84,7 @@
*! (C) Copyright 1999-2002 Axis Communications AB, LUND, SWEDEN
*!
*!***************************************************************************/
/* $Id: i2c.c,v 1.9 2004/08/24 06:49:14 starvik Exp $ */
/* $Id: i2c.c,v 1.13 2005/03/07 13:13:07 starvik Exp $ */
/****************** INCLUDE FILES SECTION ***********************************/
......@@ -95,6 +104,7 @@
#include <asm/arch/svinto.h>
#include <asm/io.h>
#include <asm/delay.h>
#include <asm/arch/io_interface_mux.h>
#include "i2c.h"
......@@ -184,6 +194,7 @@ static const char i2c_name[] = "i2c";
#define i2c_delay(usecs) udelay(usecs)
static DEFINE_SPINLOCK(i2c_lock); /* Protect directions etc */
/****************** FUNCTION DEFINITION SECTION *************************/
......@@ -488,13 +499,14 @@ i2c_writereg(unsigned char theSlave, unsigned char theReg,
int error, cntr = 3;
unsigned long flags;
spin_lock(&i2c_lock);
do {
error = 0;
/*
* we don't like to be interrupted
*/
local_irq_save(flags);
local_irq_disable();
i2c_start();
/*
......@@ -538,6 +550,8 @@ i2c_writereg(unsigned char theSlave, unsigned char theReg,
i2c_delay(CLOCK_LOW_TIME);
spin_unlock(&i2c_lock);
return -error;
}
......@@ -555,13 +569,14 @@ i2c_readreg(unsigned char theSlave, unsigned char theReg)
int error, cntr = 3;
unsigned long flags;
spin_lock(&i2c_lock);
do {
error = 0;
/*
* we don't like to be interrupted
*/
local_irq_save(flags);
local_irq_disable();
/*
* generate start condition
*/
......@@ -620,6 +635,8 @@ i2c_readreg(unsigned char theSlave, unsigned char theReg)
} while(error && cntr--);
spin_unlock(&i2c_lock);
return b;
}
......@@ -686,15 +703,26 @@ static struct file_operations i2c_fops = {
int __init
i2c_init(void)
{
static int res = 0;
static int first = 1;
if (!first) {
return res;
}
/* Setup and enable the Port B I2C interface */
#ifndef CONFIG_ETRAX_I2C_USES_PB_NOT_PB_I2C
if ((res = cris_request_io_interface(if_i2c, "I2C"))) {
printk(KERN_CRIT "i2c_init: Failed to get IO interface\n");
return res;
}
*R_PORT_PB_I2C = port_pb_i2c_shadow |=
IO_STATE(R_PORT_PB_I2C, i2c_en, on) |
IO_FIELD(R_PORT_PB_I2C, i2c_d, 1) |
IO_FIELD(R_PORT_PB_I2C, i2c_clk, 1) |
IO_STATE(R_PORT_PB_I2C, i2c_oe_, enable);
#endif
port_pb_dir_shadow &= ~IO_MASK(R_PORT_PB_DIR, dir0);
port_pb_dir_shadow &= ~IO_MASK(R_PORT_PB_DIR, dir1);
......@@ -702,8 +730,26 @@ i2c_init(void)
*R_PORT_PB_DIR = (port_pb_dir_shadow |=
IO_STATE(R_PORT_PB_DIR, dir0, input) |
IO_STATE(R_PORT_PB_DIR, dir1, output));
#else
if ((res = cris_io_interface_allocate_pins(if_i2c,
'b',
CONFIG_ETRAX_I2C_DATA_PORT,
CONFIG_ETRAX_I2C_DATA_PORT))) {
printk(KERN_WARNING "i2c_init: Failed to get IO pin for I2C data port\n");
return res;
} else if ((res = cris_io_interface_allocate_pins(if_i2c,
'b',
CONFIG_ETRAX_I2C_CLK_PORT,
CONFIG_ETRAX_I2C_CLK_PORT))) {
cris_io_interface_free_pins(if_i2c,
'b',
CONFIG_ETRAX_I2C_DATA_PORT,
CONFIG_ETRAX_I2C_DATA_PORT);
printk(KERN_WARNING "i2c_init: Failed to get IO pin for I2C clk port\n");
}
#endif
return 0;
return res;
}
static int __init
......@@ -711,14 +757,16 @@ i2c_register(void)
{
int res;
i2c_init();
res = i2c_init();
if (res < 0)
return res;
res = register_chrdev(I2C_MAJOR, i2c_name, &i2c_fops);
if(res < 0) {
printk(KERN_ERR "i2c: couldn't get a major number.\n");
return res;
}
printk(KERN_INFO "I2C driver v2.2, (c) 1999-2001 Axis Communications AB\n");
printk(KERN_INFO "I2C driver v2.2, (c) 1999-2004 Axis Communications AB\n");
return 0;
}
......
arch/cris/arch-v10/drivers/pcf8563.c
View file @ 661299d9
......@@ -15,7 +15,7 @@
*
* Author: Tobias Anderberg <tobiasa@axis.com>.
*
* $Id: pcf8563.c,v 1.8 2004/08/24 06:42:51 starvik Exp $
* $Id: pcf8563.c,v 1.11 2005/03/07 13:13:07 starvik Exp $
*/
#include <linux/config.h>
......@@ -40,7 +40,7 @@
#define PCF8563_MAJOR 121 /* Local major number. */
#define DEVICE_NAME "rtc" /* Name which is registered in /proc/devices. */
#define PCF8563_NAME "PCF8563"
#define DRIVER_VERSION "$Revision: 1.8 $"
#define DRIVER_VERSION "$Revision: 1.11 $"
/* I2C bus slave registers. */
#define RTC_I2C_READ 0xa3
......@@ -49,6 +49,8 @@
/* Two simple wrapper macros, saves a few keystrokes. */
#define rtc_read(x) i2c_readreg(RTC_I2C_READ, x)
#define rtc_write(x,y) i2c_writereg(RTC_I2C_WRITE, x, y)
static DEFINE_SPINLOCK(rtc_lock); /* Protect state etc */
static const unsigned char days_in_month[] =
{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
......@@ -125,9 +127,12 @@ get_rtc_time(struct rtc_time *tm)
int __init
pcf8563_init(void)
{
unsigned char ret;
int ret;
i2c_init();
if ((ret = i2c_init())) {
printk(KERN_CRIT "pcf8563_init: failed to init i2c\n");
return ret;
}
/*
* First of all we need to reset the chip. This is done by
......@@ -200,12 +205,15 @@ pcf8563_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned
{
struct rtc_time tm;
spin_lock(&rtc_lock);
get_rtc_time(&tm);
if (copy_to_user((struct rtc_time *) arg, &tm, sizeof(struct rtc_time))) {
spin_unlock(&rtc_lock);
return -EFAULT;
}
spin_unlock(&rtc_lock);
return 0;
}
break;
......@@ -250,6 +258,8 @@ pcf8563_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned
BIN_TO_BCD(tm.tm_min);
BIN_TO_BCD(tm.tm_sec);
tm.tm_mon |= century;
spin_lock(&rtc_lock);
rtc_write(RTC_YEAR, tm.tm_year);
rtc_write(RTC_MONTH, tm.tm_mon);
......@@ -258,6 +268,8 @@ pcf8563_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned
rtc_write(RTC_MINUTES, tm.tm_min);
rtc_write(RTC_SECONDS, tm.tm_sec);
spin_unlock(&rtc_lock);
return 0;
#endif /* !CONFIG_ETRAX_RTC_READONLY */
}
......
arch/cris/arch-v10/kernel/Makefile
View file @ 661299d9
# $Id: Makefile,v 1.5 2004/06/02 08:24:38 starvik Exp $
# $Id: Makefile,v 1.6 2004/12/13 12:21:51 starvik Exp $
#
# Makefile for the linux kernel.
#
......@@ -7,7 +7,8 @@ extra-y := head.o
obj-y := entry.o traps.o shadows.o debugport.o irq.o \
process.o setup.o signal.o traps.o time.o ptrace.o
process.o setup.o signal.o traps.o time.o ptrace.o \
dma.o io_interface_mux.o
obj-$(CONFIG_ETRAX_KGDB) += kgdb.o
obj-$(CONFIG_ETRAX_FAST_TIMER) += fasttimer.o
......
arch/cris/arch-v10/kernel/debugport.c
View file @ 661299d9
This diff is collapsed.
arch/cris/arch-v10/kernel/dma.c 0 → 100644
View file @ 661299d9
/* Wrapper for DMA channel allocator that updates DMA client muxing.
* Copyright 2004, Axis Communications AB
* $Id: dma.c,v 1.1 2004/12/13 12:21:51 starvik Exp $
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <asm/dma.h>
#include <asm/arch/svinto.h>
/* Macro to access ETRAX 100 registers */
#define SETS(var, reg, field, val) var = (var & ~IO_MASK_(reg##_, field##_)) | \
IO_STATE_(reg##_, field##_, _##val)
static char used_dma_channels[MAX_DMA_CHANNELS];
static const char * used_dma_channels_users[MAX_DMA_CHANNELS];
int cris_request_dma(unsigned int dmanr, const char * device_id,
unsigned options, enum dma_owner owner)
{
unsigned long flags;
unsigned long int gens;
int fail = -EINVAL;
if ((dmanr < 0) || (dmanr >= MAX_DMA_CHANNELS)) {
printk(KERN_CRIT "cris_request_dma: invalid DMA channel %u\n", dmanr);
return -EINVAL;
}
local_irq_save(flags);
if (used_dma_channels[dmanr]) {
local_irq_restore(flags);
if (options & DMA_VERBOSE_ON_ERROR) {
printk(KERN_CRIT "Failed to request DMA %i for %s, already allocated by %s\n", dmanr, device_id, used_dma_channels_users[dmanr]);
}
if (options & DMA_PANIC_ON_ERROR) {
panic("request_dma error!");
}
return -EBUSY;
}
gens = genconfig_shadow;
switch(owner)
{
case dma_eth:
if ((dmanr != NETWORK_TX_DMA_NBR) &&
(dmanr != NETWORK_RX_DMA_NBR)) {
printk(KERN_CRIT "Invalid DMA channel for eth\n");
goto bail;
}
break;
case dma_ser0:
if (dmanr == SER0_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma6, serial0);
} else if (dmanr == SER0_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma7, serial0);
} else {
printk(KERN_CRIT "Invalid DMA channel for ser0\n");
goto bail;
}
break;
case dma_ser1:
if (dmanr == SER1_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma8, serial1);
} else if (dmanr == SER1_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma9, serial1);
} else {
printk(KERN_CRIT "Invalid DMA channel for ser1\n");
goto bail;
}
break;
case dma_ser2:
if (dmanr == SER2_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma2, serial2);
} else if (dmanr == SER2_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma3, serial2);
} else {
printk(KERN_CRIT "Invalid DMA channel for ser2\n");
goto bail;
}
break;
case dma_ser3:
if (dmanr == SER3_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma4, serial3);
} else if (dmanr == SER3_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma5, serial3);
} else {
printk(KERN_CRIT "Invalid DMA channel for ser3\n");
goto bail;
}
break;
case dma_ata:
if (dmanr == ATA_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma2, ata);
} else if (dmanr == ATA_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma3, ata);
} else {
printk(KERN_CRIT "Invalid DMA channel for ata\n");
goto bail;
}
break;
case dma_ext0:
if (dmanr == EXTDMA0_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma4, extdma0);
} else if (dmanr == EXTDMA0_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma5, extdma0);
} else {
printk(KERN_CRIT "Invalid DMA channel for ext0\n");
goto bail;
}
break;
case dma_ext1:
if (dmanr == EXTDMA1_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma6, extdma1);
} else if (dmanr == EXTDMA1_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma7, extdma1);
} else {
printk(KERN_CRIT "Invalid DMA channel for ext1\n");
goto bail;
}
break;
case dma_int6:
if (dmanr == MEM2MEM_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma7, intdma6);
} else {
printk(KERN_CRIT "Invalid DMA channel for int6\n");
goto bail;
}
break;
case dma_int7:
if (dmanr == MEM2MEM_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma6, intdma7);
} else {
printk(KERN_CRIT "Invalid DMA channel for int7\n");
goto bail;
}
break;
case dma_usb:
if (dmanr == USB_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma8, usb);
} else if (dmanr == USB_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma9, usb);
} else {
printk(KERN_CRIT "Invalid DMA channel for usb\n");
goto bail;
}
break;
case dma_scsi0:
if (dmanr == SCSI0_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma2, scsi0);
} else if (dmanr == SCSI0_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma3, scsi0);
} else {
printk(KERN_CRIT "Invalid DMA channel for scsi0\n");
goto bail;
}
break;
case dma_scsi1:
if (dmanr == SCSI1_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma4, scsi1);
} else if (dmanr == SCSI1_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma5, scsi1);
} else {
printk(KERN_CRIT "Invalid DMA channel for scsi1\n");
goto bail;
}
break;
case dma_par0:
if (dmanr == PAR0_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma2, par0);
} else if (dmanr == PAR0_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma3, par0);
} else {
printk(KERN_CRIT "Invalid DMA channel for par0\n");
goto bail;
}
break;
case dma_par1:
if (dmanr == PAR1_TX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma4, par1);
} else if (dmanr == PAR1_RX_DMA_NBR) {
SETS(gens, R_GEN_CONFIG, dma5, par1);
} else {
printk(KERN_CRIT "Invalid DMA channel for par1\n");
goto bail;
}
break;
default:
printk(KERN_CRIT "Invalid DMA owner.\n");
goto bail;
}
used_dma_channels[dmanr] = 1;
used_dma_channels_users[dmanr] = device_id;
{
volatile int i;
genconfig_shadow = gens;
*R_GEN_CONFIG = genconfig_shadow;
/* Wait 12 cycles before doing any DMA command */
for(i = 6; i > 0; i--)
nop();
}
fail = 0;
bail:
local_irq_restore(flags);
return fail;
}
void cris_free_dma(unsigned int dmanr, const char * device_id)
{
unsigned long flags;
if ((dmanr < 0) || (dmanr >= MAX_DMA_CHANNELS)) {
printk(KERN_CRIT "cris_free_dma: invalid DMA channel %u\n", dmanr);
return;
}
local_irq_save(flags);
if (!used_dma_channels[dmanr]) {
printk(KERN_CRIT "cris_free_dma: DMA channel %u not allocated\n", dmanr);
} else if (device_id != used_dma_channels_users[dmanr]) {
printk(KERN_CRIT "cris_free_dma: DMA channel %u not allocated by device\n", dmanr);
} else {
switch(dmanr)
{
case 0:
*R_DMA_CH0_CMD = IO_STATE(R_DMA_CH0_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH0_CMD, cmd, *R_DMA_CH0_CMD) ==
IO_STATE_VALUE(R_DMA_CH0_CMD, cmd, reset));
break;
case 1:
*R_DMA_CH1_CMD = IO_STATE(R_DMA_CH1_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH1_CMD, cmd, *R_DMA_CH1_CMD) ==
IO_STATE_VALUE(R_DMA_CH1_CMD, cmd, reset));
break;
case 2:
*R_DMA_CH2_CMD = IO_STATE(R_DMA_CH2_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH2_CMD, cmd, *R_DMA_CH2_CMD) ==
IO_STATE_VALUE(R_DMA_CH2_CMD, cmd, reset));
break;
case 3:
*R_DMA_CH3_CMD = IO_STATE(R_DMA_CH3_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH3_CMD, cmd, *R_DMA_CH3_CMD) ==
IO_STATE_VALUE(R_DMA_CH3_CMD, cmd, reset));
break;
case 4:
*R_DMA_CH4_CMD = IO_STATE(R_DMA_CH4_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH4_CMD, cmd, *R_DMA_CH4_CMD) ==
IO_STATE_VALUE(R_DMA_CH4_CMD, cmd, reset));
break;
case 5:
*R_DMA_CH5_CMD = IO_STATE(R_DMA_CH5_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH5_CMD, cmd, *R_DMA_CH5_CMD) ==
IO_STATE_VALUE(R_DMA_CH5_CMD, cmd, reset));
break;
case 6:
*R_DMA_CH6_CMD = IO_STATE(R_DMA_CH6_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH6_CMD, cmd, *R_DMA_CH6_CMD) ==
IO_STATE_VALUE(R_DMA_CH6_CMD, cmd, reset));
break;
case 7:
*R_DMA_CH7_CMD = IO_STATE(R_DMA_CH7_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH7_CMD, cmd, *R_DMA_CH7_CMD) ==
IO_STATE_VALUE(R_DMA_CH7_CMD, cmd, reset));
break;
case 8:
*R_DMA_CH8_CMD = IO_STATE(R_DMA_CH8_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH8_CMD, cmd, *R_DMA_CH8_CMD) ==
IO_STATE_VALUE(R_DMA_CH8_CMD, cmd, reset));
break;
case 9:
*R_DMA_CH9_CMD = IO_STATE(R_DMA_CH9_CMD, cmd, reset);
while (IO_EXTRACT(R_DMA_CH9_CMD, cmd, *R_DMA_CH9_CMD) ==
IO_STATE_VALUE(R_DMA_CH9_CMD, cmd, reset));
break;
}
used_dma_channels[dmanr] = 0;
}
local_irq_restore(flags);
}
EXPORT_SYMBOL(cris_request_dma);
EXPORT_SYMBOL(cris_free_dma);
arch/cris/arch-v10/kernel/entry.S
View file @ 661299d9
/* $Id: entry.S,v 1.23 2004/10/19 13:07:37 starvik Exp $
/* $Id: entry.S,v 1.28 2005/06/20 05:06:30 starvik Exp $
*
* linux/arch/cris/entry.S
*
......@@ -7,6 +7,22 @@
* Authors: Bjorn Wesen (bjornw@axis.com)
*
* $Log: entry.S,v $
* Revision 1.28 2005/06/20 05:06:30 starvik
* Remove unnecessary diff to kernel.org tree
*
* Revision 1.27 2005/03/04 08:16:16 starvik
* Merge of Linux 2.6.11.
*
* Revision 1.26 2005/01/11 13:49:47 starvik
* Added NMI handler.
*
* Revision 1.25 2004/12/27 11:18:32 starvik
* Merge of Linux 2.6.10 (not functional yet).
*
* Revision 1.24 2004/12/22 10:41:23 starvik
* Updates to make v10 compile with the latest SMP aware generic code (even
* though v10 will never have SMP).
*
* Revision 1.23 2004/10/19 13:07:37 starvik
* Merge of Linux 2.6.9
*
......@@ -279,6 +295,7 @@
#ifdef CONFIG_PREEMPT
; Check if preemptive kernel scheduling should be done
_resume_kernel:
di
; Load current task struct
movs.w -8192, $r0 ; THREAD_SIZE = 8192
and.d $sp, $r0
......@@ -291,12 +308,7 @@ _need_resched:
bpl _Rexit
nop
; Ok, lets's do some preemptive kernel scheduling
move.d PREEMPT_ACTIVE, $r10
move.d $r10, [$r0+TI_preempt_count] ; Mark as active
ei
jsr schedule
clear.d [$r0+TI_preempt_count] ; Mark as inactive
di
jsr preempt_schedule_irq
; Load new task struct
movs.w -8192, $r0 ; THREAD_SIZE = 8192
and.d $sp, $r0
......@@ -590,15 +602,15 @@ mmu_bus_fault:
move.d $r0, [$sp+16]
1: btstq 12, $r1 ; Refill?
bpl 2f
lsrq PMD_SHIFT, $r1 ; Get PMD index into PGD (bit 24-31)
move.d [current_pgd], $r0 ; PGD for the current process
lsrq 24, $r1 ; Get PGD index (bit 24-31)
move.d [per_cpu__current_pgd], $r0 ; PGD for the current process
move.d [$r0+$r1.d], $r0 ; Get PMD
beq 2f
nop
and.w PAGE_MASK, $r0 ; Remove PMD flags
move.d [R_MMU_CAUSE], $r1
lsrq PAGE_SHIFT, $r1
and.d 0x7ff, $r1 ; Get PTE index into PMD (bit 13-24)
and.d 0x7ff, $r1 ; Get PTE index into PGD (bit 13-23)
move.d [$r0+$r1.d], $r1 ; Get PTE
beq 2f
nop
......@@ -656,11 +668,6 @@ hwbreakpoint:
nop
IRQ1_interrupt:
#if defined(CONFIG_ETRAX_WATCHDOG) && !defined(CONFIG_SVINTO_SIM)
;; If we receive a watchdog interrupt while it is not expected, then set
;; up a canonical frame and dump register contents before dying.
;; this prologue MUST match the one in irq.h and the struct in ptregs.h!!!
move $brp,[$sp=$sp-16]; instruction pointer and room for a fake SBFS frame
push $srp
......@@ -672,9 +679,16 @@ IRQ1_interrupt:
push $r10 ; push orig_r10
clear.d [$sp=$sp-4] ; frametype == 0, normal frame
;; We don't check that we actually were bit by the watchdog as opposed to
;; an external NMI, since there is currently no handler for external NMI.
move.d [R_IRQ_MASK0_RD], $r1 ; External NMI or watchdog?
and.d 0x80000000, $r1
beq wdog
move.d $sp, $r10
jsr handle_nmi
setf m ; Enable NMI again
retb ; Return from NMI
nop
wdog:
#if defined(CONFIG_ETRAX_WATCHDOG) && !defined(CONFIG_SVINTO_SIM)
;; Check if we're waiting for reset to happen, as signalled by
;; hard_reset_now setting cause_of_death to a magic value. If so, just
;; get stuck until reset happens.
......@@ -1118,6 +1132,10 @@ sys_call_table:
.long sys_mq_getsetattr
.long sys_ni_syscall /* reserved for kexec */
.long sys_waitid
.long sys_ni_syscall /* 285 */ /* available */
.long sys_add_key
.long sys_request_key
.long sys_keyctl
/*
* NOTE!! This doesn't have to be exact - we just have
......
arch/cris/arch-v10/kernel/fasttimer.c
View file @ 661299d9
/* $Id: fasttimer.c,v 1.6 2004/05/14 10:18:39 starvik Exp $
/* $Id: fasttimer.c,v 1.9 2005/03/04 08:16:16 starvik Exp $
* linux/arch/cris/kernel/fasttimer.c
*
* Fast timers for ETRAX100/ETRAX100LX
* This may be useful in other OS than Linux so use 2 space indentation...
*
* $Log: fasttimer.c,v $
* Revision 1.9 2005/03/04 08:16:16 starvik
* Merge of Linux 2.6.11.
*
* Revision 1.8 2005/01/05 06:09:29 starvik
* cli()/sti() will be obsolete in 2.6.11.
*
* Revision 1.7 2005/01/03 13:35:46 starvik
* Removed obsolete stuff.
* Mark fast timer IRQ as not shared.
*
* Revision 1.6 2004/05/14 10:18:39 starvik
* Export fast_timer_list
*
......@@ -148,8 +158,7 @@ static int debug_log_cnt_wrapped = 0;
#define DEBUG_LOG(string, value) \
{ \
unsigned long log_flags; \
save_flags(log_flags); \
cli(); \
local_irq_save(log_flags); \
debug_log_string[debug_log_cnt] = (string); \
debug_log_value[debug_log_cnt] = (unsigned long)(value); \
if (++debug_log_cnt >= DEBUG_LOG_MAX) \
......@@ -157,7 +166,7 @@ static int debug_log_cnt_wrapped = 0;
debug_log_cnt = debug_log_cnt % DEBUG_LOG_MAX; \
debug_log_cnt_wrapped = 1; \
} \
restore_flags(log_flags); \
local_irq_restore(log_flags); \
}
#else
#define DEBUG_LOG(string, value)
......@@ -320,8 +329,7 @@ void start_one_shot_timer(struct fast_timer *t,
D1(printk("sft %s %d us\n", name, delay_us));
save_flags(flags);
cli();
local_irq_save(flags);
do_gettimeofday_fast(&t->tv_set);
tmp = fast_timer_list;
......@@ -395,7 +403,7 @@ void start_one_shot_timer(struct fast_timer *t,
D2(printk("start_one_shot_timer: %d us done\n", delay_us));
restore_flags(flags);
local_irq_restore(flags);
} /* start_one_shot_timer */
static inline int fast_timer_pending (const struct fast_timer * t)
......@@ -425,11 +433,10 @@ int del_fast_timer(struct fast_timer * t)
unsigned long flags;
int ret;
save_flags(flags);
cli();
local_irq_save(flags);
ret = detach_fast_timer(t);
t->next = t->prev = NULL;
restore_flags(flags);
local_irq_restore(flags);
return ret;
} /* del_fast_timer */
......@@ -444,8 +451,7 @@ timer1_handler(int irq, void *dev_id, struct pt_regs *regs)
struct fast_timer *t;
unsigned long flags;
save_flags(flags);
cli();
local_irq_save(flags);
/* Clear timer1 irq */
*R_IRQ_MASK0_CLR = IO_STATE(R_IRQ_MASK0_CLR, timer1, clr);
......@@ -462,7 +468,7 @@ timer1_handler(int irq, void *dev_id, struct pt_regs *regs)
fast_timer_running = 0;
fast_timer_ints++;
restore_flags(flags);
local_irq_restore(flags);
t = fast_timer_list;
while (t)
......@@ -482,8 +488,7 @@ timer1_handler(int irq, void *dev_id, struct pt_regs *regs)
fast_timers_expired++;
/* Remove this timer before call, since it may reuse the timer */
save_flags(flags);
cli();
local_irq_save(flags);
if (t->prev)
{
t->prev->next = t->next;
......@@ -498,7 +503,7 @@ timer1_handler(int irq, void *dev_id, struct pt_regs *regs)
}
t->prev = NULL;
t->next = NULL;
restore_flags(flags);
local_irq_restore(flags);
if (t->function != NULL)
{
......@@ -515,8 +520,7 @@ timer1_handler(int irq, void *dev_id, struct pt_regs *regs)
D1(printk(".\n"));
}
save_flags(flags);
cli();
local_irq_save(flags);
if ((t = fast_timer_list) != NULL)
{
/* Start next timer.. */
......@@ -535,7 +539,7 @@ timer1_handler(int irq, void *dev_id, struct pt_regs *regs)
#endif
start_timer1(us);
}
restore_flags(flags);
local_irq_restore(flags);
break;
}
else
......@@ -546,7 +550,7 @@ timer1_handler(int irq, void *dev_id, struct pt_regs *regs)
D1(printk("e! %d\n", us));
}
}
restore_flags(flags);
local_irq_restore(flags);
}
if (!t)
......@@ -748,13 +752,12 @@ static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
#endif
used += sprintf(bigbuf + used, "Active timers:\n");
save_flags(flags);
cli();
local_irq_save(flags);
t = fast_timer_list;
while (t != NULL && (used+100 < BIG_BUF_SIZE))
{
nextt = t->next;
restore_flags(flags);
local_irq_restore(flags);
used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
"d: %6li us data: 0x%08lX"
/* " func: 0x%08lX" */
......@@ -768,14 +771,14 @@ static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
t->data
/* , t->function */
);
cli();
local_irq_disable();
if (t->next != nextt)
{
printk(KERN_WARNING "timer removed!\n");
}
t = nextt;
}
restore_flags(flags);
local_irq_restore(flags);
}
if (used - offset < len)
......@@ -963,7 +966,7 @@ void fast_timer_init(void)
if ((fasttimer_proc_entry = create_proc_entry( "fasttimer", 0, 0 )))
fasttimer_proc_entry->read_proc = proc_fasttimer_read;
#endif /* PROC_FS */
if(request_irq(TIMER1_IRQ_NBR, timer1_handler, SA_SHIRQ,
if(request_irq(TIMER1_IRQ_NBR, timer1_handler, 0,
"fast timer int", NULL))
{
printk("err: timer1 irq\n");
......
arch/cris/arch-v10/kernel/head.S
View file @ 661299d9
/* $Id: head.S,v 1.7 2004/05/14 07:58:01 starvik Exp $
/* $Id: head.S,v 1.10 2005/06/20 05:12:54 starvik Exp $
*
* Head of the kernel - alter with care
*
......@@ -7,6 +7,16 @@
* Authors: Bjorn Wesen (bjornw@axis.com)
*
* $Log: head.S,v $
* Revision 1.10 2005/06/20 05:12:54 starvik
* Remove unnecessary diff to kernel.org tree
*
* Revision 1.9 2004/12/13 12:21:51 starvik
* Added I/O and DMA allocators from Linux 2.4
*
* Revision 1.8 2004/11/22 11:41:14 starvik
* Kernel command line may be supplied to kernel. Not used by Axis but may
* be used by customers.
*
* Revision 1.7 2004/05/14 07:58:01 starvik
* Merge of changes from 2.4
*
......@@ -181,6 +191,7 @@
#define CRAMFS_MAGIC 0x28cd3d45
#define RAM_INIT_MAGIC 0x56902387
#define COMMAND_LINE_MAGIC 0x87109563
#define START_ETHERNET_CLOCK IO_STATE(R_NETWORK_GEN_CONFIG, enable, on) |\
IO_STATE(R_NETWORK_GEN_CONFIG, phy, mii_clk)
......@@ -490,6 +501,23 @@ _no_romfs_in_flash:
_start_it:
;; Check if kernel command line is supplied
cmp.d COMMAND_LINE_MAGIC, $r10
bne no_command_line
nop
move.d 256, $r13
move.d cris_command_line, $r10
or.d 0x80000000, $r11 ; Make it virtual
1:
move.b [$r11+], $r12
move.b $r12, [$r10+]
subq 1, $r13
bne 1b
nop
no_command_line:
;; the kernel stack is overlayed with the task structure for each
;; task. thus the initial kernel stack is in the same page as the
;; init_task (but starts in the top of the page, size 8192)
......@@ -567,76 +595,32 @@ _start_it:
;; Etrax product HW genconfig setup
moveq 0,$r0
#if (!defined(CONFIG_ETRAX_KGDB) || !defined(CONFIG_ETRAX_DEBUG_PORT0)) \
&& !defined(CONFIG_DMA_MEMCPY)
; DMA channels 6 and 7 to ser0, kgdb doesnt want DMA
or.d IO_STATE (R_GEN_CONFIG, dma7, serial0) \
| IO_STATE (R_GEN_CONFIG, dma6, serial0),$r0
#endif
#if !defined(CONFIG_ETRAX_KGDB) || !defined(CONFIG_ETRAX_DEBUG_PORT1)
; DMA channels 8 and 9 to ser1, kgdb doesnt want DMA
or.d IO_STATE (R_GEN_CONFIG, dma9, serial1) \
| IO_STATE (R_GEN_CONFIG, dma8, serial1),$r0
#endif
#ifdef CONFIG_DMA_MEMCPY
; 6/7 memory-memory DMA
or.d IO_STATE (R_GEN_CONFIG, dma7, intdma6) \
| IO_STATE (R_GEN_CONFIG, dma6, intdma7),$r0
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT2
; Enable serial port 2
or.w IO_STATE (R_GEN_CONFIG, ser2, select),$r0
#if !defined(CONFIG_ETRAX_KGDB) || !defined(CONFIG_ETRAX_DEBUG_PORT2)
; DMA channels 2 and 3 to ser2, kgdb doesnt want DMA
or.d IO_STATE (R_GEN_CONFIG, dma3, serial2) \
| IO_STATE (R_GEN_CONFIG, dma2, serial2),$r0
#endif
#endif
#if defined(CONFIG_ETRAX_SERIAL_PORT3) || defined(CONFIG_ETRAX_SYNCHRONOUS_SERIAL_PORT1)
; Enable serial port 3
or.w IO_STATE (R_GEN_CONFIG, ser3, select),$r0
#if !defined(CONFIG_ETRAX_KGDB) || !defined(CONFIG_ETRAX_DEBUG_PORT3)
; DMA channels 4 and 5 to ser3, kgdb doesnt want DMA
or.d IO_STATE (R_GEN_CONFIG, dma5, serial3) \
| IO_STATE (R_GEN_CONFIG, dma4, serial3),$r0
#endif
#endif
#if defined(CONFIG_ETRAX_PARALLEL_PORT0) || defined(CONFIG_ETRAX_ETHERNET_LPSLAVE)
; parport 0 enabled using DMA 2/3
or.w IO_STATE (R_GEN_CONFIG, par0, select),$r0
#endif
#if defined(CONFIG_ETRAX_PARALLEL_PORT1) || defined(CONFIG_ETRAX_ETHERNET_LPSLAVE)
; parport 1 enabled using DMA 4/5
or.w IO_STATE (R_GEN_CONFIG, par1, select),$r0
#endif
#ifdef CONFIG_ETRAX_IDE
; DMA channels 2 and 3 to ATA, ATA enabled
or.d IO_STATE (R_GEN_CONFIG, dma3, ata) \
| IO_STATE (R_GEN_CONFIG, dma2, ata) \
| IO_STATE (R_GEN_CONFIG, ata, select),$r0
#endif
#ifdef CONFIG_ETRAX_USB_HOST_PORT1
; Set the USB port 1 enable bit
or.d IO_STATE (R_GEN_CONFIG, usb1, select),$r0
#endif
#ifdef CONFIG_ETRAX_USB_HOST_PORT2
; Set the USB port 2 enable bit
or.d IO_STATE (R_GEN_CONFIG, usb2, select),$r0
#endif
#ifdef CONFIG_ETRAX_USB_HOST
; Connect DMA channels 8 and 9 to USB
and.d (~(IO_MASK (R_GEN_CONFIG, dma9) \
| IO_MASK (R_GEN_CONFIG, dma8))) \
| IO_STATE (R_GEN_CONFIG, dma9, usb) \
| IO_STATE (R_GEN_CONFIG, dma8, usb),$r0
#endif
#ifdef CONFIG_JULIETTE
; DMA channels 4 and 5 to EXTDMA0, for Juliette
or.d IO_STATE (R_GEN_CONFIG, dma5, extdma0) \
| IO_STATE (R_GEN_CONFIG, dma4, extdma0),$r0
#endif
;; Init interfaces (disable them).
or.d IO_STATE (R_GEN_CONFIG, scsi0, disable) \
| IO_STATE (R_GEN_CONFIG, ata, disable) \
| IO_STATE (R_GEN_CONFIG, par0, disable) \
| IO_STATE (R_GEN_CONFIG, ser2, disable) \
| IO_STATE (R_GEN_CONFIG, mio, disable) \
| IO_STATE (R_GEN_CONFIG, scsi1, disable) \
| IO_STATE (R_GEN_CONFIG, scsi0w, disable) \
| IO_STATE (R_GEN_CONFIG, par1, disable) \
| IO_STATE (R_GEN_CONFIG, ser3, disable) \
| IO_STATE (R_GEN_CONFIG, mio_w, disable) \
| IO_STATE (R_GEN_CONFIG, usb1, disable) \
| IO_STATE (R_GEN_CONFIG, usb2, disable) \
| IO_STATE (R_GEN_CONFIG, par_w, disable),$r0
;; Init DMA channel muxing (set to unused clients).
or.d IO_STATE (R_GEN_CONFIG, dma2, ata) \
| IO_STATE (R_GEN_CONFIG, dma3, ata) \
| IO_STATE (R_GEN_CONFIG, dma4, scsi1) \
| IO_STATE (R_GEN_CONFIG, dma5, scsi1) \
| IO_STATE (R_GEN_CONFIG, dma6, unused) \
| IO_STATE (R_GEN_CONFIG, dma7, unused) \
| IO_STATE (R_GEN_CONFIG, dma8, usb) \
| IO_STATE (R_GEN_CONFIG, dma9, usb),$r0
#if defined(CONFIG_ETRAX_DEF_R_PORT_G0_DIR_OUT)
or.d IO_STATE (R_GEN_CONFIG, g0dir, out),$r0
......
arch/cris/arch-v10/kernel/io_interface_mux.c 0 → 100644
View file @ 661299d9
This diff is collapsed.
arch/cris/arch-v10/kernel/irq.c
View file @ 661299d9
/* $Id: irq.c,v 1.2 2004/06/09 05:30:27 starvik Exp $
/* $Id: irq.c,v 1.4 2005/01/04 12:22:28 starvik Exp $
*
* linux/arch/cris/kernel/irq.c
*
......@@ -12,11 +12,13 @@
*/
#include <asm/irq.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/config.h>
irqvectptr irq_shortcuts[NR_IRQS]; /* vector of shortcut jumps after the irq prologue */
#define mask_irq(irq_nr) (*R_VECT_MASK_CLR = 1 << (irq_nr));
#define unmask_irq(irq_nr) (*R_VECT_MASK_SET = 1 << (irq_nr));
/* don't use set_int_vector, it bypasses the linux interrupt handlers. it is
* global just so that the kernel gdb can use it.
......@@ -102,41 +104,52 @@ static void (*interrupt[NR_IRQS])(void) = {
IRQ31_interrupt
};
static void (*bad_interrupt[NR_IRQS])(void) = {
NULL, NULL,
NULL, bad_IRQ3_interrupt,
bad_IRQ4_interrupt, bad_IRQ5_interrupt,
bad_IRQ6_interrupt, bad_IRQ7_interrupt,
bad_IRQ8_interrupt, bad_IRQ9_interrupt,
bad_IRQ10_interrupt, bad_IRQ11_interrupt,
bad_IRQ12_interrupt, bad_IRQ13_interrupt,
NULL, NULL,
bad_IRQ16_interrupt, bad_IRQ17_interrupt,
bad_IRQ18_interrupt, bad_IRQ19_interrupt,
bad_IRQ20_interrupt, bad_IRQ21_interrupt,
bad_IRQ22_interrupt, bad_IRQ23_interrupt,
bad_IRQ24_interrupt, bad_IRQ25_interrupt,
NULL, NULL, NULL, NULL, NULL,
bad_IRQ31_interrupt
};
static void enable_crisv10_irq(unsigned int irq);
static unsigned int startup_crisv10_irq(unsigned int irq)
{
enable_crisv10_irq(irq);
return 0;
}
#define shutdown_crisv10_irq disable_crisv10_irq
void arch_setup_irq(int irq)
static void enable_crisv10_irq(unsigned int irq)
{
set_int_vector(irq, interrupt[irq]);
unmask_irq(irq);
}
void arch_free_irq(int irq)
static void disable_crisv10_irq(unsigned int irq)
{
set_int_vector(irq, bad_interrupt[irq]);
mask_irq(irq);
}
static void ack_crisv10_irq(unsigned int irq)
{
}
static void end_crisv10_irq(unsigned int irq)
{
}
static struct hw_interrupt_type crisv10_irq_type = {
.typename = "CRISv10",
.startup = startup_crisv10_irq,
.shutdown = shutdown_crisv10_irq,
.enable = enable_crisv10_irq,
.disable = disable_crisv10_irq,
.ack = ack_crisv10_irq,
.end = end_crisv10_irq,
.set_affinity = NULL
};
void weird_irq(void);
void system_call(void); /* from entry.S */
void do_sigtrap(void); /* from entry.S */
void gdb_handle_breakpoint(void); /* from entry.S */
/* init_IRQ() is called by start_kernel and is responsible for fixing IRQ masks and
setting the irq vector table to point to bad_interrupt ptrs.
setting the irq vector table.
*/
void __init
......@@ -154,14 +167,15 @@ init_IRQ(void)
*R_VECT_MASK_CLR = 0xffffffff;
/* clear the shortcut entry points */
for(i = 0; i < NR_IRQS; i++)
irq_shortcuts[i] = NULL;
for (i = 0; i < 256; i++)
etrax_irv->v[i] = weird_irq;
/* Initialize IRQ handler descriptiors. */
for(i = 2; i < NR_IRQS; i++) {
irq_desc[i].handler = &crisv10_irq_type;
set_int_vector(i, interrupt[i]);
}
/* the entries in the break vector contain actual code to be
executed by the associated break handler, rather than just a jump
address. therefore we need to setup a default breakpoint handler
......@@ -170,10 +184,6 @@ init_IRQ(void)
for (i = 0; i < 16; i++)
set_break_vector(i, do_sigtrap);
/* set all etrax irq's to the bad handlers */
for (i = 2; i < NR_IRQS; i++)
set_int_vector(i, bad_interrupt[i]);
/* except IRQ 15 which is the multiple-IRQ handler on Etrax100 */
set_int_vector(15, multiple_interrupt);
......
arch/cris/arch-v10/kernel/kgdb.c
View file @ 661299d9
......@@ -18,6 +18,10 @@
*! Jul 21 1999 Bjorn Wesen eLinux port
*!
*! $Log: kgdb.c,v $
*! Revision 1.6 2005/01/14 10:12:17 starvik
*! KGDB on separate port.
*! Console fixes from 2.4.
*!
*! Revision 1.5 2004/10/07 13:59:08 starvik
*! Corrected call to set_int_vector
*!
......@@ -71,7 +75,7 @@
*!
*!---------------------------------------------------------------------------
*!
*! $Id: kgdb.c,v 1.5 2004/10/07 13:59:08 starvik Exp $
*! $Id: kgdb.c,v 1.6 2005/01/14 10:12:17 starvik Exp $
*!
*! (C) Copyright 1999, Axis Communications AB, LUND, SWEDEN
*!
......@@ -225,6 +229,7 @@
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/linkage.h>
#include <linux/reboot.h>
#include <asm/setup.h>
#include <asm/ptrace.h>
......@@ -1344,12 +1349,11 @@ handle_exception (int sigval)
}
}
/* The jump is to the address 0x00000002. Performs a complete re-start
from scratch. */
/* Performs a complete re-start from scratch. */
static void
kill_restart ()
{
__asm__ volatile ("jump 2");
machine_restart("");
}
/********************************** Breakpoint *******************************/
......@@ -1506,6 +1510,11 @@ asm ("
bne goback
nop
move.d [reg+0x5E], $r10 ; Get DCCR
btstq 8, $r10 ; Test the U-flag.
bmi goback
nop
;;
;; Handle the communication
;;
......
arch/cris/arch-v10/kernel/process.c
View file @ 661299d9
/* $Id: process.c,v 1.9 2004/10/19 13:07:37 starvik Exp $
/* $Id: process.c,v 1.12 2004/12/27 11:18:32 starvik Exp $
*
* linux/arch/cris/kernel/process.c
*
......@@ -101,6 +101,7 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
regs.r11 = (unsigned long)fn;
regs.r12 = (unsigned long)arg;
regs.irp = (unsigned long)kernel_thread_helper;
regs.dccr = 1 << I_DCCR_BITNR;
/* Ok, create the new process.. */
return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
......
arch/cris/arch-v10/kernel/ptrace.c
View file @ 661299d9
......@@ -11,6 +11,7 @@
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/signal.h>
#include <linux/security.h>
#include <asm/uaccess.h>
#include <asm/page.h>
......@@ -86,9 +87,13 @@ sys_ptrace(long request, long pid, long addr, long data)
ret = -EPERM;
if (request == PTRACE_TRACEME) {
/* are we already being traced? */
if (current->ptrace & PT_PTRACED)
goto out;
ret = security_ptrace(current->parent, current);
if (ret)
goto out;
/* set the ptrace bit in the process flags. */
current->ptrace |= PT_PTRACED;
ret = 0;
goto out;
......@@ -207,7 +212,7 @@ sys_ptrace(long request, long pid, long addr, long data)
case PTRACE_KILL:
ret = 0;
if (child->state == TASK_ZOMBIE)
if (child->exit_state == EXIT_ZOMBIE)
break;
child->exit_code = SIGKILL;
......
arch/cris/arch-v10/kernel/shadows.c
View file @ 661299d9
/* $Id: shadows.c,v 1.1 2001/12/17 13:59:27 bjornw Exp $
/* $Id: shadows.c,v 1.2 2004/12/13 12:21:51 starvik Exp $
*
* Various shadow registers. Defines for these are in include/asm-etrax100/io.h
*/
......@@ -6,6 +6,7 @@
/* Shadows for internal Etrax-registers */
unsigned long genconfig_shadow;
unsigned long gen_config_ii_shadow;
unsigned long port_g_data_shadow;
unsigned char port_pa_dir_shadow;
unsigned char port_pa_data_shadow;
......
arch/cris/arch-v10/kernel/traps.c
View file @ 661299d9
/* $Id: traps.c,v 1.2 2003/07/04 08:27:41 starvik Exp $
/* $Id: traps.c,v 1.4 2005/04/24 18:47:55 starvik Exp $
*
* linux/arch/cris/arch-v10/traps.c
*
......@@ -16,6 +16,8 @@
#include <asm/uaccess.h>
#include <asm/arch/sv_addr_ag.h>
extern int raw_printk(const char *fmt, ...);
void
show_registers(struct pt_regs * regs)
{
......@@ -26,18 +28,18 @@ show_registers(struct pt_regs * regs)
register. */
unsigned long usp = rdusp();
printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n",
raw_printk("IRP: %08lx SRP: %08lx DCCR: %08lx USP: %08lx MOF: %08lx\n",
regs->irp, regs->srp, regs->dccr, usp, regs->mof );
printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n",
raw_printk(" r0: %08lx r1: %08lx r2: %08lx r3: %08lx\n",
regs->r0, regs->r1, regs->r2, regs->r3);
printk(" r4: %08lx r5: %08lx r6: %08lx r7: %08lx\n",
raw_printk(" r4: %08lx r5: %08lx r6: %08lx r7: %08lx\n",
regs->r4, regs->r5, regs->r6, regs->r7);
printk(" r8: %08lx r9: %08lx r10: %08lx r11: %08lx\n",
raw_printk(" r8: %08lx r9: %08lx r10: %08lx r11: %08lx\n",
regs->r8, regs->r9, regs->r10, regs->r11);
printk("r12: %08lx r13: %08lx oR10: %08lx\n",
regs->r12, regs->r13, regs->orig_r10);
printk("R_MMU_CAUSE: %08lx\n", (unsigned long)*R_MMU_CAUSE);
printk("Process %s (pid: %d, stackpage=%08lx)\n",
raw_printk("r12: %08lx r13: %08lx oR10: %08lx sp: %08lx\n",
regs->r12, regs->r13, regs->orig_r10, regs);
raw_printk("R_MMU_CAUSE: %08lx\n", (unsigned long)*R_MMU_CAUSE);
raw_printk("Process %s (pid: %d, stackpage=%08lx)\n",
current->comm, current->pid, (unsigned long)current);
/*
......@@ -53,7 +55,7 @@ show_registers(struct pt_regs * regs)
if (usp != 0)
show_stack (NULL, NULL);
printk("\nCode: ");
raw_printk("\nCode: ");
if(regs->irp < PAGE_OFFSET)
goto bad;
......@@ -70,16 +72,16 @@ show_registers(struct pt_regs * regs)
unsigned char c;
if(__get_user(c, &((unsigned char*)regs->irp)[i])) {
bad:
printk(" Bad IP value.");
raw_printk(" Bad IP value.");
break;
}
if (i == 0)
printk("(%02x) ", c);
raw_printk("(%02x) ", c);
else
printk("%02x ", c);
raw_printk("%02x ", c);
}
printk("\n");
raw_printk("\n");
}
}
......@@ -121,7 +123,7 @@ die_if_kernel(const char * str, struct pt_regs * regs, long err)
stop_watchdog();
#endif
printk("%s: %04lx\n", str, err & 0xffff);
raw_printk("%s: %04lx\n", str, err & 0xffff);
show_registers(regs);
......@@ -130,3 +132,8 @@ die_if_kernel(const char * str, struct pt_regs * regs, long err)
#endif
do_exit(SIGSEGV);
}
void arch_enable_nmi(void)
{
asm volatile("setf m");
}
arch/cris/arch-v10/mm/fault.c
View file @ 661299d9
......@@ -14,6 +14,7 @@
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/arch/svinto.h>
#include <asm/mmu_context.h>
/* debug of low-level TLB reload */
#undef DEBUG
......@@ -24,8 +25,6 @@
#define D(x)
#endif
extern volatile pgd_t *current_pgd;
extern const struct exception_table_entry
*search_exception_tables(unsigned long addr);
......@@ -46,7 +45,7 @@ handle_mmu_bus_fault(struct pt_regs *regs)
int page_id;
int acc, inv;
#endif
pgd_t* pgd = (pgd_t*)current_pgd;
pgd_t* pgd = (pgd_t*)per_cpu(current_pgd, smp_processor_id());
pmd_t *pmd;
pte_t pte;
int miss, we, writeac;
......@@ -94,24 +93,3 @@ handle_mmu_bus_fault(struct pt_regs *regs)
*R_TLB_LO = pte_val(pte);
local_irq_restore(flags);
}
/* Called from arch/cris/mm/fault.c to find fixup code. */
int
find_fixup_code(struct pt_regs *regs)
{
const struct exception_table_entry *fixup;
if ((fixup = search_exception_tables(regs->irp)) != 0) {
/* Adjust the instruction pointer in the stackframe. */
regs->irp = fixup->fixup;
/*
* Don't return by restoring the CPU state, so switch
* frame-type.
*/
regs->frametype = CRIS_FRAME_NORMAL;
return 1;
}
return 0;
}
arch/cris/arch-v10/mm/init.c
View file @ 661299d9
......@@ -42,7 +42,7 @@ paging_init(void)
* switch_mm)
*/
current_pgd = init_mm.pgd;
per_cpu(current_pgd, smp_processor_id()) = init_mm.pgd;
/* initialise the TLB (tlb.c) */
......
arch/cris/arch-v10/mm/tlb.c
View file @ 661299d9
......@@ -139,53 +139,6 @@ flush_tlb_page(struct vm_area_struct *vma,
local_irq_restore(flags);
}
/* invalidate a page range */
void
flush_tlb_range(struct vm_area_struct *vma,
unsigned long start,
unsigned long end)
{
struct mm_struct *mm = vma->vm_mm;
int page_id = mm->context.page_id;
int i;
unsigned long flags;
D(printk("tlb: flush range %p<->%p in context %d (%p)\n",
start, end, page_id, mm));
if(page_id == NO_CONTEXT)
return;
start &= PAGE_MASK; /* probably not necessary */
end &= PAGE_MASK; /* dito */
/* invalidate those TLB entries that match both the mm context
* and the virtual address range
*/
local_save_flags(flags);
local_irq_disable();
for(i = 0; i < NUM_TLB_ENTRIES; i++) {
unsigned long tlb_hi, vpn;
*R_TLB_SELECT = IO_FIELD(R_TLB_SELECT, index, i);
tlb_hi = *R_TLB_HI;
vpn = tlb_hi & PAGE_MASK;
if (IO_EXTRACT(R_TLB_HI, page_id, tlb_hi) == page_id &&
vpn >= start && vpn < end) {
*R_TLB_HI = ( IO_FIELD(R_TLB_HI, page_id, INVALID_PAGEID ) |
IO_FIELD(R_TLB_HI, vpn, i & 0xf ) );
*R_TLB_LO = ( IO_STATE(R_TLB_LO, global,no ) |
IO_STATE(R_TLB_LO, valid, no ) |
IO_STATE(R_TLB_LO, kernel,no ) |
IO_STATE(R_TLB_LO, we, no ) |
IO_FIELD(R_TLB_LO, pfn, 0 ) );
}
}
local_irq_restore(flags);
}
/* dump the entire TLB for debug purposes */
#if 0
......@@ -237,7 +190,7 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
* the pgd.
*/
current_pgd = next->pgd;
per_cpu(current_pgd, smp_processor_id()) = next->pgd;
/* switch context in the MMU */
......
arch/cris/arch-v32/Kconfig 0 → 100644
View file @ 661299d9
config ETRAX_DRAM_VIRTUAL_BASE
hex
depends on ETRAX_ARCH_V32
default "c0000000"
config ETRAX_LED1G
string "First green LED bit"
depends on ETRAX_ARCH_V32
default "PA3"
help
Bit to use for the first green LED (network LED).
Most Axis products use bit A3 here.
config ETRAX_LED1R
string "First red LED bit"
depends on ETRAX_ARCH_V32
default "PA4"
help
Bit to use for the first red LED (network LED).
Most Axis products use bit A4 here.
config ETRAX_LED2G
string "Second green LED bit"
depends on ETRAX_ARCH_V32
default "PA5"
help
Bit to use for the first green LED (status LED).
Most Axis products use bit A5 here.
config ETRAX_LED2R
string "Second red LED bit"
depends on ETRAX_ARCH_V32
default "PA6"
help
Bit to use for the first red LED (network LED).
Most Axis products use bit A6 here.
config ETRAX_LED3G
string "Third green LED bit"
depends on ETRAX_ARCH_V32
default "PA7"
help
Bit to use for the first green LED (drive/power LED).
Most Axis products use bit A7 here.
config ETRAX_LED3R
string "Third red LED bit"
depends on ETRAX_ARCH_V32
default "PA7"
help
Bit to use for the first red LED (drive/power LED).
Most Axis products use bit A7 here.
choice
prompt "Product debug-port"
depends on ETRAX_ARCH_V32
default ETRAX_DEBUG_PORT0
config ETRAX_DEBUG_PORT0
bool "Serial-0"
help
Choose a serial port for the ETRAX debug console. Default to
port 0.
config ETRAX_DEBUG_PORT1
bool "Serial-1"
help
Use serial port 1 for the console.
config ETRAX_DEBUG_PORT2
bool "Serial-2"
help
Use serial port 2 for the console.
config ETRAX_DEBUG_PORT3
bool "Serial-3"
help
Use serial port 3 for the console.
config ETRAX_DEBUG_PORT_NULL
bool "disabled"
help
Disable serial-port debugging.
endchoice
choice
prompt "Kernel GDB port"
depends on ETRAX_KGDB
default ETRAX_KGDB_PORT0
help
Choose a serial port for kernel debugging. NOTE: This port should
not be enabled under Drivers for built-in interfaces (as it has its
own initialization code) and should not be the same as the debug port.
config ETRAX_KGDB_PORT0
bool "Serial-0"
help
Use serial port 0 for kernel debugging.
config ETRAX_KGDB_PORT1
bool "Serial-1"
help
Use serial port 1 for kernel debugging.
config ETRAX_KGDB_PORT2
bool "Serial-2"
help
Use serial port 2 for kernel debugging.
config ETRAX_KGDB_PORT3
bool "Serial-3"
help
Use serial port 3 for kernel debugging.
endchoice
config ETRAX_MEM_GRP1_CONFIG
hex "MEM_GRP1_CONFIG"
depends on ETRAX_ARCH_V32
default "4044a"
help
Waitstates for flash. The default value is suitable for the
standard flashes used in axis products (120 ns).
config ETRAX_MEM_GRP2_CONFIG
hex "MEM_GRP2_CONFIG"
depends on ETRAX_ARCH_V32
default "0"
help
Waitstates for SRAM. 0 is a good choice for most Axis products.
config ETRAX_MEM_GRP3_CONFIG
hex "MEM_GRP3_CONFIG"
depends on ETRAX_ARCH_V32
default "0"
help
Waitstates for CSP0-3. 0 is a good choice for most Axis products.
It may need to be changed if external devices such as extra
register-mapped LEDs are used.
config ETRAX_MEM_GRP4_CONFIG
hex "MEM_GRP4_CONFIG"
depends on ETRAX_ARCH_V32
default "0"
help
Waitstates for CSP4-6. 0 is a good choice for most Axis products.
config ETRAX_SDRAM_GRP0_CONFIG
hex "SDRAM_GRP0_CONFIG"
depends on ETRAX_ARCH_V32
default "336"
help
SDRAM configuration for group 0. The value depends on the
hardware configuration. The default value is suitable
for 32 MB organized as two 16 bits chips (e.g. Axis
part number 18550) connected as one 32 bit device (i.e. in
the same group).
config ETRAX_SDRAM_GRP1_CONFIG
hex "SDRAM_GRP1_CONFIG"
depends on ETRAX_ARCH_V32
default "0"
help
SDRAM configuration for group 1. The defult value is 0
because group 1 is not used in the default configuration,
described in the help for SDRAM_GRP0_CONFIG.
config ETRAX_SDRAM_TIMING
hex "SDRAM_TIMING"
depends on ETRAX_ARCH_V32
default "104a"
help
SDRAM timing parameters. The default value is ok for
most hardwares but large SDRAMs may require a faster
refresh (a.k.a 8K refresh). The default value implies
100MHz clock and SDR mode.
config ETRAX_SDRAM_COMMAND
hex "SDRAM_COMMAND"
depends on ETRAX_ARCH_V32
default "0"
help
SDRAM command. Should be 0 unless you really know what
you are doing (may be != 0 for unusual address line
mappings such as in a MCM)..
config ETRAX_DEF_GIO_PA_OE
hex "GIO_PA_OE"
depends on ETRAX_ARCH_V32
default "1c"
help
Configures the direction of general port A bits. 1 is out, 0 is in.
This is often totally different depending on the product used.
There are some guidelines though - if you know that only LED's are
connected to port PA, then they are usually connected to bits 2-4
and you can therefore use 1c. On other boards which don't have the
LED's at the general ports, these bits are used for all kinds of
stuff. If you don't know what to use, it is always safe to put all
as inputs, although floating inputs isn't good.
config ETRAX_DEF_GIO_PA_OUT
hex "GIO_PA_OUT"
depends on ETRAX_ARCH_V32
default "00"
help
Configures the initial data for the general port A bits. Most
products should use 00 here.
config ETRAX_DEF_GIO_PB_OE
hex "GIO_PB_OE"
depends on ETRAX_ARCH_V32
default "00000"
help
Configures the direction of general port B bits. 1 is out, 0 is in.
This is often totally different depending on the product used.
There are some guidelines though - if you know that only LED's are
connected to port PA, then they are usually connected to bits 2-4
and you can therefore use 1c. On other boards which don't have the
LED's at the general ports, these bits are used for all kinds of
stuff. If you don't know what to use, it is always safe to put all
as inputs, although floating inputs isn't good.
config ETRAX_DEF_GIO_PB_OUT
hex "GIO_PB_OUT"
depends on ETRAX_ARCH_V32
default "00000"
help
Configures the initial data for the general port B bits. Most
products should use 00000 here.
config ETRAX_DEF_GIO_PC_OE
hex "GIO_PC_OE"
depends on ETRAX_ARCH_V32
default "00000"
help
Configures the direction of general port C bits. 1 is out, 0 is in.
This is often totally different depending on the product used.
There are some guidelines though - if you know that only LED's are
connected to port PA, then they are usually connected to bits 2-4
and you can therefore use 1c. On other boards which don't have the
LED's at the general ports, these bits are used for all kinds of
stuff. If you don't know what to use, it is always safe to put all
as inputs, although floating inputs isn't good.
config ETRAX_DEF_GIO_PC_OUT
hex "GIO_PC_OUT"
depends on ETRAX_ARCH_V32
default "00000"
help
Configures the initial data for the general port C bits. Most
products should use 00000 here.
config ETRAX_DEF_GIO_PD_OE
hex "GIO_PD_OE"
depends on ETRAX_ARCH_V32
default "00000"
help
Configures the direction of general port D bits. 1 is out, 0 is in.
This is often totally different depending on the product used.
There are some guidelines though - if you know that only LED's are
connected to port PA, then they are usually connected to bits 2-4
and you can therefore use 1c. On other boards which don't have the
LED's at the general ports, these bits are used for all kinds of
stuff. If you don't know what to use, it is always safe to put all
as inputs, although floating inputs isn't good.
config ETRAX_DEF_GIO_PD_OUT
hex "GIO_PD_OUT"
depends on ETRAX_ARCH_V32
default "00000"
help
Configures the initial data for the general port D bits. Most
products should use 00000 here.
config ETRAX_DEF_GIO_PE_OE
hex "GIO_PE_OE"
depends on ETRAX_ARCH_V32
default "00000"
help
Configures the direction of general port E bits. 1 is out, 0 is in.
This is often totally different depending on the product used.
There are some guidelines though - if you know that only LED's are
connected to port PA, then they are usually connected to bits 2-4
and you can therefore use 1c. On other boards which don't have the
LED's at the general ports, these bits are used for all kinds of
stuff. If you don't know what to use, it is always safe to put all
as inputs, although floating inputs isn't good.
config ETRAX_DEF_GIO_PE_OUT
hex "GIO_PE_OUT"
depends on ETRAX_ARCH_V32
default "00000"
help
Configures the initial data for the general port E bits. Most
products should use 00000 here.
arch/cris/arch-v32/boot/Makefile 0 → 100644
View file @ 661299d9
#
# arch/cris/arch-v32/boot/Makefile
#
target = $(target_boot_dir)
src = $(src_boot_dir)
zImage: compressed/vmlinuz
compressed/vmlinuz: $(objtree)/vmlinux
@$(MAKE) -f $(src)/compressed/Makefile $(objtree)/vmlinuz
clean:
rm -f zImage tools/build compressed/vmlinux.out
@$(MAKE) -f $(src)/compressed/Makefile clean
arch/cris/arch-v32/boot/compressed/Makefile 0 → 100644
View file @ 661299d9
#
# lx25/arch/cris/arch-v32/boot/compressed/Makefile
#
# create a compressed vmlinux image from the original vmlinux files and romfs
#
target = $(target_compressed_dir)
src = $(src_compressed_dir)
CC = gcc-cris -mlinux -march=v32 -I $(TOPDIR)/include
CFLAGS = -O2
LD = gcc-cris -mlinux -march=v32 -nostdlib
OBJCOPY = objcopy-cris
OBJCOPYFLAGS = -O binary --remove-section=.bss
OBJECTS = $(target)/head.o $(target)/misc.o
# files to compress
SYSTEM = $(objtree)/vmlinux.bin
all: vmlinuz
$(target)/decompress.bin: $(OBJECTS)
$(LD) -T $(src)/decompress.ld -o $(target)/decompress.o $(OBJECTS)
$(OBJCOPY) $(OBJCOPYFLAGS) $(target)/decompress.o $(target)/decompress.bin
$(objtree)/vmlinuz: $(target) piggy.img $(target)/decompress.bin
cat $(target)/decompress.bin piggy.img > $(objtree)/vmlinuz
rm -f piggy.img
cp $(objtree)/vmlinuz $(src)
$(target)/head.o: $(src)/head.S
$(CC) -D__ASSEMBLY__ -c $< -o $@
# gzip the kernel image
piggy.img: $(SYSTEM)
cat $(SYSTEM) | gzip -f -9 > piggy.img
clean:
rm -f piggy.img $(objtree)/vmlinuz vmlinuz.o decompress.o decompress.bin $(OBJECTS)
arch/cris/arch-v32/boot/compressed/README 0 → 100644
View file @ 661299d9
Creation of the self-extracting compressed kernel image (vmlinuz)
-----------------------------------------------------------------
$Id: README,v 1.1 2003/08/21 09:37:03 johana Exp $
This can be slightly confusing because it's a process with many steps.
The kernel object built by the arch/etrax100/Makefile, vmlinux, is split
by that makefile into text and data binary files, vmlinux.text and
vmlinux.data.
Those files together with a ROM filesystem can be catted together and
burned into a flash or executed directly at the DRAM origin.
They can also be catted together and compressed with gzip, which is what
happens in this makefile. Together they make up piggy.img.
The decompressor is built into the file decompress.o. It is turned into
the binary file decompress.bin, which is catted together with piggy.img
into the file vmlinuz. It can be executed in an arbitrary place in flash.
Be careful - it assumes some things about free locations in DRAM. It
assumes the DRAM starts at 0x40000000 and that it is at least 8 MB,
so it puts its code at 0x40700000, and initial stack at 0x40800000.
-Bjorn
arch/cris/arch-v32/boot/compressed/decompress.ld 0 → 100644
View file @ 661299d9
/*#OUTPUT_FORMAT(elf32-us-cris) */
OUTPUT_ARCH (crisv32)
MEMORY
{
dram : ORIGIN = 0x40700000,
LENGTH = 0x00100000
}
SECTIONS
{
.text :
{
_stext = . ;
*(.text)
*(.rodata)
*(.rodata.*)
_etext = . ;
} > dram
.data :
{
*(.data)
_edata = . ;
} > dram
.bss :
{
*(.bss)
_end = ALIGN( 0x10 ) ;
} > dram
}
arch/cris/arch-v32/boot/compressed/head.S 0 → 100644
View file @ 661299d9
This diff is collapsed.
arch/cris/arch-v32/boot/compressed/misc.c 0 → 100644
View file @ 661299d9
This diff is collapsed.
arch/cris/arch-v32/boot/rescue/Makefile 0 → 100644
View file @ 661299d9
#
# Makefile for rescue code
#
target = $(target_rescue_dir)
src = $(src_rescue_dir)
CC = gcc-cris -mlinux -march=v32 $(LINUXINCLUDE)
CFLAGS = -O2
LD = gcc-cris -mlinux -march=v32 -nostdlib
OBJCOPY = objcopy-cris
OBJCOPYFLAGS = -O binary --remove-section=.bss
all: $(target)/rescue.bin
rescue: rescue.bin
# do nothing
$(target)/rescue.bin: $(target) $(target)/head.o
$(LD) -T $(src)/rescue.ld -o $(target)/rescue.o $(target)/head.o
$(OBJCOPY) $(OBJCOPYFLAGS) $(target)/rescue.o $(target)/rescue.bin
cp -p $(target)/rescue.bin $(objtree)
$(target):
mkdir -p $(target)
$(target)/head.o: $(src)/head.S
$(CC) -D__ASSEMBLY__ -c $< -o $*.o
clean:
rm -f $(target)/*.o $(target)/*.bin
fastdep:
modules:
modules-install:
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/* $Id: head.S,v 1.4 2004/11/01 16:10:28 starvik Exp $
*
* This used to be the rescue code but now that is handled by the
* RedBoot based RFL instead. Nothing to see here, move along.
*/
#include <linux/config.h>
#include <asm/arch/hwregs/reg_map_asm.h>
#include <asm/arch/hwregs/config_defs_asm.h>
.text
;; Start clocks for used blocks.
move.d REG_ADDR(config, regi_config, rw_clk_ctrl), $r1
move.d [$r1], $r0
or.d REG_STATE(config, rw_clk_ctrl, cpu, yes) | \
REG_STATE(config, rw_clk_ctrl, bif, yes) | \
REG_STATE(config, rw_clk_ctrl, fix_io, yes), $r0
move.d $r0, [$r1]
;; Copy 68KB NAND flash to Internal RAM (if NAND boot)
move.d 0x38004000, $r10
move.d 0x8000, $r11
move.d 0x11000, $r12
move.d copy_complete, $r13
and.d 0x000fffff, $r13
or.d 0x38000000, $r13
#include "../../lib/nand_init.S"
;; No NAND found
move.d CONFIG_ETRAX_PTABLE_SECTOR, $r10
jump $r10 ; Jump to decompresser
nop
copy_complete:
move.d 0x38000000 + CONFIG_ETRAX_PTABLE_SECTOR, $r10
jump $r10 ; Jump to decompresser
nop
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MEMORY
{
flash : ORIGIN = 0x00000000,
LENGTH = 0x00100000
}
SECTIONS
{
.text :
{
stext = . ;
*(.text)
etext = . ;
} > flash
.data :
{
*(.data)
edata = . ;
} > flash
}
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#
# Makefile for Etrax-specific drivers
#
obj-$(CONFIG_ETRAX_STREAMCOPROC) += cryptocop.o
obj-$(CONFIG_ETRAX_AXISFLASHMAP) += axisflashmap.o
obj-$(CONFIG_ETRAX_NANDFLASH) += nandflash.o
obj-$(CONFIG_ETRAX_GPIO) += gpio.o
obj-$(CONFIG_ETRAX_IOP_FW_LOAD) += iop_fw_load.o
obj-$(CONFIG_ETRAX_PCF8563) += pcf8563.o
obj-$(CONFIG_ETRAX_I2C) += i2c.o
obj-$(CONFIG_ETRAX_SYNCHRONOUS_SERIAL) += sync_serial.o
obj-$(CONFIG_PCI) += pci/
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#include <linux/init.h>
/* High level I2C actions */
int __init i2c_init(void);
int i2c_writereg(unsigned char theSlave, unsigned char theReg, unsigned char theValue);
unsigned char i2c_readreg(unsigned char theSlave, unsigned char theReg);
/* Low level I2C */
void i2c_start(void);
void i2c_stop(void);
void i2c_outbyte(unsigned char x);
unsigned char i2c_inbyte(void);
int i2c_getack(void);
void i2c_sendack(void);
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#
# Makefile for Etrax cardbus driver
#
obj-$(CONFIG_ETRAX_CARDBUS) += bios.o dma.o
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